(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "A catalog of world famous Duro products"

INTERNATIONAL 



Digitized by 
The Association for Preservation Technology International 

For the 

Building Technology Heritage Library 

http://archive.orq/details/buildingtechnologyheritagelibrarv 



Catalog No. 26 





oyf Qatalog of 
World Famous 
T)uro Products 



29-D-5-32 
Copyright, 1926, The Duro Company 






Printed in U, S. A. 



. 



USE THIS CATALOG IN DEMONSTRATING TO PROSPECTS 



Alphabetical Index 



Page 

Accessories — Pump and Tank 38-39-42-43 

Architects' Softener Specifications 59 

Booster Installation 33 

Charts — Ampere, Fuse and Wire 40 

Charts — Friction, and Tank Discharge 41 

Couplings — Sucker Rod 39 

Cylinders— Detail of 43 

Cylinders — Types of Deep Well 5 

Deep Well Pump — Cross Section 45 

Deep Well Pump Information . _ _ 4 

Demonstrate — How To 6 

Demonstrator — Automobile 21 

Demonstrators — Salesroom 21 

Float Switch 38 

Foot Valve, Shallow Well 39 

Foundation Plans — Deep Well 43 

Foundation Plans— Shallow Well 37 

Fresh Water System 22-38 

Fresh Water Valve 38 

Frost-Proof Set-Length 42 

Gauges for Tanks 39 

Guarantee — Pump 7 

Guarantee — Softener 64 

Guide to Selection 4 

Guides — Sucker Rod 39 

Indicators, for Tanks 39 

Installations — Deep Well 44 

Pressure Controller 38 

Pump Data— Shallow Well 37 

Pump Features 18-19 

Pump Guarantee 7 

Pump Installations — Shallow. 36 

Pumps — Shallow Well, Cross Section 20 

Pump, No. 88—200 Gallon '_. 24 

Pump No. 250—250 Gallon 26 

Pump No. 400—400 Gallon 28 

Pump No. 100__ 30 

Pump No. 2400-P 32 

Pump No. 2250-P 32 

Pump No. 100-P 32 



Page 

Pump— 900 Deep Well 46 

Pump— 3000 Deep Well 48 

Pump— 990 Deep Well 50 

Pump— 3200 Deep Well 52 

Relief Valve 38 

Sales Story 8 

Selecting a Water System. 5 

Septic Tanks 35 

Service Kit — Pump 34 

Service Kit — Softener 34 

Set -Length— Frost Proof . . 42 

Shallow Well Cross Section 20 

Shallow Well Pump Information 4 

Softener — Automatic 54 

Softener — Basic Uses 62 

Softener Capacities 55 

Softener — Cross Section of 57 

Softener — Demonstration 61 

Softener — Guarantee 64 

Softener — Installations 60 

Softener — Mechanical Features 56 

Softener — Rates of Flow . 58 

Softener — Selecting Size .55-59 

Softener — Window Display 63 

Superiorities 18-19 

Switch — Automatic 38 

System — Deep Well Information 5 

System — How to Specify 5 

System No. 77 . 22 

System No. 880 ._ 25 

System No. 250 27 

System No. 400 29 

System No. 500 31 

System— 900 Deep Well . 47 

System— 3000 Deep Well ___. 49 

System— 990 Deep Well _ 51 

System— 3200 Deep Well 53 

Tanks — Pneumatic, Pressure. 42 

Unit System 23 

Vertitank System 23 

Water Requirements — How to Compute 5 



DURO PRODUCTS ARE KNOWN THE WORLD OVER 



The Duro Factory at Dayton, Ohio 




3 3 ill a aa 

g 3 3 3 



i 

i ■ a 3 



8 J 
a l 




The Home of Duro Products — World's largest makers, World's largest sellers; automatic electric pumps, auto- 
matic water systems, and automatic water softeners. 



Offices in ^All ^Principal Qities 

Duro maintains offices in all principal cities in the United States and 
Canada. More than two hundred Duro-trained Pump and Water Softener 
Engineers operate out of these cities. 

More than twenty-two thousand local Duro Dealers sell the world-famous 
Duro Products. It may be truly stated that Duro Service is around almost 
every corner, or as near as your telephone. 

Duro is a manufacturer — not an assembler. Duro makes its own switches, 
motors, pumps, tanks, water softeners; in fact, everything that goes into the 
makeup of these products. Duro's growth has been remarkable. Its products 
are tried and proved. 

Duro manufactures a complete line of water systems and water softeners; 
a system to fit every condition exactly. 

Dealers and Architects are urged to use Duro Advisory Service, a nation- 
wide consultation engineering service for which there is neither charge nor 
obligation. Duro's vast production and sales make such a free service 
possible. 



WORLD'S 
LARGEST 
MAKERS 



The 'Duro Qompany 

<r Dayton y Ohio 



WORLD'S 
LARGEST 
SELLERS 



DURO-WORLDS LARGEST MAKERS-WORLD'S LARGEST SELLERS 



Guide to the Selection of a 



Water System 



Its Purpose — The following elementary information will be found useful in aiding you to select the right 
type of water system, as well as the pumping capacity and pressure tank sizes. 

You should study this information carefully so that you can recommend the proper type and size best 
adapted to the particular requirements of the job. 

We would suggest that you write for Duro Advisory Service Consultation Blanks, which is a form 
designed so that all of the necessary information can be filled in for your permanent record. 



Shallow Well Pumps 



A perfect vacuum at sea level will permit atmospheric pres- 
sure to sustain a column of water approximately 34 ft. in 
height. 

Suction Pump Principle — Governed by this law, pump 
designers have developed an apparatus whereby the air in a 
cylinder is exhausted through the action of a piston rod fitted 
with pliable cup leathers. 

This cylinder, directly connected with an air-tight pipe ex- 
tending to and downward into a well or cistern, creates a 
vacuum. Atmospheric pressure operating on the surface then 
forces the water into and up through the pipe and into the 
pump cylinder. An arrangement of valves, and the piston in 
turn operate to force it out of the pump proper and into the 
compression tank and service lines. This is known as a 
suction or shallow well pump. 

Average 22 Feet — Twenty-five feet at sea level is the 
maximum efficient depth below pump at which a suction 
pump will draw water satisfactorily. As elevation above sea 
level increases, this distance decreases. At 2,600 feet above 
sea level this is approximately 18 feet. At 5,000 feet, 16 feet. 
At 8,000 feet, 12 feet. 

Location of Pump and Well— * 'DURO'* Suction (Shal- 
low Well) Pumps do not need to be placed immediately over 



the well. In fact, they will draw water through a horizontal 
pipe 100 feet long and 22 feet vertically. Should the dis- 
tance to the well be greater than 100 feet, the vertical lift 
should be lessened. For example, if the distance runs to 400 
or 500 feet horizontally, the vertical suction lift should not 
exceed 10 to 12 feet unless pipe diameters are increased. 
Location of Tank — In cistern and shallow well systems 
place tanks as close to the pump as possible to obtain best 
results. If it is necessary to place the tank at some distance 
from the pump, the discharge pipe must be as straight as 
possible and should be increased to the next size larger. 

Forcing Water to Upper Floors — The water may be 

forced horizontally to almost any distance, but vertically 
water can be elevated in the house only one foot to each .43 
of a pound theoretically. A practical method of calculating 
is to figure that each pound in pressure as shown on a pressure 
gauge, will elevate water vertically two feet including friction, 
i. e., 50 pounds pressure will elevate water 100 feet vertically. 
Duro automatic switches are set to start the motor at 25 and 
stop at 40 pounds pressure, thus insuring a vertical elevation 
of water from pressure tank of from 50 to 80 feet ordinarily. 
Other pressure ranges can be had but this may necessitate 
changing of the motor. 



Deep Well Pumps 



Where water must be drawn from a depth greater than 22 
feet, or in cases where the fall of the water in the well brings 
it beyond the shallow well pump range — a deep well pump 
must be used. 

Where Installed — Unlike the shallow well suction pump, 
the deep well pump and head must be installed directly over 
the well. 

In deep well pump construction the pump unit or cylinder is 
lowered into the water and connected to the power unit or 
head by means of a long piston rod, usually of wood. The 
power head or body therefore must be located directly over 
the well. 

Frost- proof— As the location of a deep well is usually some 
distance away from the house foundation, provision must be 
made to protect the pump against freeze-ups, where climatic 
conditions warrant. 

Absolutely Frost-proof — This is accomplished by means of 
a seepage-proof pump pit — or, by means of the Duro PAT- 
ENTED Frost-Proof Set-Length (see illustration on page 
42). The feature which insures against freezing is the fact 
that the air pump is also lowered below the frost line. This 
eliminates the old trouble with so-called "frost-proof" set 
lengths where the water backed up into the air tube and 
froze, or where condensation caused freezing. The Duro 
Set-length is strictly frost-proof. The regular length of the 
frost-proof set-length is four feet. However, it can be fur- 
nished any length desired. 

Drop Pipe and Sucker Rod— Deep Well Systems speci- 
fied on the following pages do not include sucker rod and drop 



pipe. Since depths and diameters of wells vary greatly this 
cannot be included with any degree of uniformity. When 
desired we can furnish drop pipe and sucker rod in the sizes 
specified, prices of which will be found in the price sheet. 
When ready to leave the factory the pipe and sucker rod are 
cut to the proper lengths ready to screw together. Where an 
open type of cylinder is used the pipe is plugged and reamed 
so the plunger and rod in cylinder can be withdrawn without 
injury. Sucker rod is threaded as follows: Y%* pipe stand- 
ard; \}/%" wood, with Y%" by 12 thread; l^g" wood, V%'hy 
10 thread; V/z" wood, with 1" by 10 thread. 

When To Use — If the vertical distance from the bottom of 
the pump to water level is more than 22 feet, a Deep Well 
Pump must be used. 

The essential difference between a Deep Well Pump and a 
Shallow Well Pump is that the cylinder, or working barrel 
should be submerged under the water at all times, and the 
power head which furnishes the power for operating the pump, 
must be located directly over the deep well. The power head 
is connected with the cylinder by means of a sucker rod. 
When the system operates the water in the cylinder is forced 
upward to the surface through the drop pipe, and then into 
the pressure tank. 

After the water is in the pressure tank, it is forced up through 
the house pipes and to the fixtures just exactly as in the case 
of a shallow well system — by the pressure of the air in the tank. 



DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 



How To Compute Water Requirements 



The following figures are given as a guide in computing the 
amount of water required for a given condition and in se- 
lecting the proper Duro pump or system to fit that condition. 
The maximum capacity of a system for an hour is the sum of 
the pump capacity in gallons per hour and one-fifth of the 
capacity of the tank. 

For drinking and cooking 25 gal. per person per day 

To fill ordinary lavatory -lH g a l- 

To fill average bathtub 30 gal. 

To flush water closet 4 to 6 gal. 



For each shower bath 30 gal. per bath 

Continuous flowing drinking fountains 50 gal. per hour 

For sprinkling (J/£ in. hose) m 250 gal. per hour 

(10 gal. will sprinkle 100 sq. ft., 20 gal. will soak 100 sq. ft.) 

Horses 8 gal. per head per day 

Cattle 9 gal. per head per day 

Hogs 2 x /2 gal. per head per day 

Sheep 13^2 gal. per head per day 

By dividing pump capacity into average daily usage, average 
daily pumping hours can be determined. Pump capacity 
should be greater than maximum usage during any one hour. 



Specifying The System 



The size pump and tank to be specified depends upon the 
average daily requirements; the maximum amount of water 
required during any one hour, and the storage desired. 
Fresh Water System — For jobs where the maximum hour- 
ly requirements do not exceed 200 gallons per hour, and where 
no storage is required, the "Duro" No. 77 Fresh Water Sys- 
tem is ideal, as every time a fixture is used the motor starts 
operating, and fresh water is pumped directly from the well. 
Suburban — Most suburban homes require the "Duro" 
Vertitank of either 200, 250 or 400 gallons per hour. If a 
greater amount of storage is required, a No. 880, 250 or 400 
system, with either 42, 80 or 120 gallon tank is generally used. 
Farm — Farms usually require a Vertitank System, or a 
No. 400 system with an 80 or 120 gallon tank, or, for larger 
Dairy and Stock Farms a No. 500 System with a 220, 315 or 
525 gallon tank. 

Schools — Schools, large Country Homes and other institu- 
tions usually require a No. 500 System with 525 gallon or 
larger tanks. 

Sprinkling — A %- inch hose uses 250 gallons of water per 
hour. Therefore, whenever satisfactory fire protection and 
sprinkling are desired, never specify less than a 400 gallon 
per hour pump. 

Computations If a family uses an average of 500 gallons 
per day, a style No. 400 system will give 400 gallons per hour, 
plus one- fifth of the tank capacity — which is 1 6 gallons, when 
an 80 gallon tank is used. 



This represents a total of 416 gallons of water during any one 
hour. On the basis of using 500 gallons a day, the pump 
would operate approximately an hour and thirteen minutes 
every twenty- four hours to supply the requirements. 

Tank Capacities — "Duro" standard tank capacities range 
from 30 gallon to 1500 gallon and larger sizes. 

Duro, however, has designed its tanks to operate with one- 
half air and one-half water, thereby increasing the quantity 
of water which can be discharged between pressures from a 
tank. This means that in some instances by using Duro 
equipment, a smaller tank can be specified, and still give the 
same tank discharge capacity as larger tanks that are ar- 
ranged for one- third air and two- thirds water. 

When in doubt about which of two sizes of tanks to specify 
always be safe and specify the larger size tank. 

Deep "Well Systems — The same rules as above apply to 
Deep Well Pumps, although the conditions in the well, in 
addition to the amount of water required daily, must be 
taken into consideration. 

Duro Advisory Service — Duro maintains an Engineering 

Advisory Service, and will be happy to make recommenda- 
tions upon receipt of the necessary facts concerning the pro- 
posed job. Duro Sales Engineers will also be happy to go 
over the proposed job on the ground, or to consult with dealers 
and architects. 



Selecting The Deep Well System 



The selection and specification of Deep Well Pumps and Sys- 
tems depends absolutely upon the following conditions: 
1 — Inside diameter of well. 
2— Total depth of well. 
3 — Normal depth of water. 
4 — Fall in water level when being pumped. 
5 — Flow of well in gallons per minute. 

6 — Highest point to which water must be elevated above 
pump. 

7 — Average daily water consumption. 

The size of storage tank depends upon the amount of water 
requirements. 

Consultation Service — Before specifying deep well pumps 
or systems, get the above information from the well driller or 
owner. Then unless you are thoroughly familiar with the 



specifications of deep well pumps or systems, consult the Duro 
factory -trained deep well specialist. Simply write the nearest 
DURO office and a pump engineer will be glad to call and 
work with you— whether you specify "DURO" or not. 

Installation Guaranteed — This is a part of our free con- 
sultation service which has proven so helpful to plumbers and 
sanitary engineers in the past. It gives you the definite as- 
surance that the pump or system specified is absolutely cor- 
rect, and we stand back of this to the limit. Over two hun- 
dred factory representatives throughout the United States 
and Canada insures a prompt personal response to your in- 
quiry. 

Capacities — "DURO" Deep Well Pumps are made in vary- 
ing sizes with capacities from 100 to 2100 gallons of water 
per hour. 



Types of Deep Well Cylinders 



There are two types of deep well cylinders, the single-acting 

and the double-acting. 

Single- Acting Cylinder — In the case of the single-acting 

cylinder, on the down stroke, water in the cylinder chamber 

is forced through the plunger valve into the drop pipe. 

On the up stroke, the water discharged into the drop pipe is 

forced upward and at the same time, water is drawn into 

the cylinder chamber below the plunger. 

In addition, the differential plunger in the base of the power 

head discharges water on the down stroke, evening the load 

on the motor, and giving a constant stream of water. 



Double- Acting Cylinder — A double-acting cylinder is 
simply two single-acting cylinders built to operate together — * 
the one inverted to operate on the down stroke. 

The "DURO" double-acting cylinder has many advantages 
over the single-acting type, because it delivers twice the 
amount of water from the same size well. It permits the use 
of a smaller drop pipe. It makes a well balanced pump in 
operation. In addition, the cost is sometimes lower as a 
smaller well can be drilled and smaller casing used to produce 
the capacity of a larger drilled well. Also, the cost per gallon 
of water pumped is considerably less. 



How To Use The Demonstration Section 



The dawn of a new era has been reached in 
the plumbing business. Conditions have 
changed. Progress necessitates changing with 
them. 

With such products as electric pumps, 
automatic water systems, automatic water 
softeners, as well as a few others, you cannot 
afford to depend upon the business that 
normally "just comes along." Creative sales 
work, merchandising — represents the big op- 
portunity of the plumbing business today. 
Study and proper usage of the material in 
this catalog will effectively aid you in such a 
program. 

Embodied in the section comprising pages 



7 to 17 inclusive, will be found an entirely 
new feature in the form of selling help in a 
catalog. It is a "picture story" leading to 
the sale. 

With this demonstrating album you or 
your salesman can call upon prospects, fol- 
lowing up direct mail letters; and in a short 
space of time, convince them of their need for 
fresh running water under pressure. You can 
easily complete the first stage of the sale — 
that of dissatisfying the prospect with his 
present conditions. You can make an ap- 
pointment for him to come to your salesroom 
to SEE the Duro Automatic Water System 
in actual operation. 



Undivided 



Show the prospect the Written Guarantee 
on the opposite page. Tell him Duro makes 
nothing but water systems. That Duro is the 
World's Largest Maker — the World's Largest 
Seller. That means more people are deciding 
to buy DURO than systems of any other 
make. Duro's responsibility is UNDIVIDED 
because Duro makes all of its pumps, tanks, 
motors, switches — everything that goes into 
the making of a water system. Duro guar- 
antees it all, and accepts full responsibility 
They do not refer you to the motor manu- 
facturer to try to settle motor trouble. Or to 
the tank manufacturer, and so on. And 
further, you can expect and you will RE- 
CEIVE longer life, better service and com- 
plete satisfaction from Duro products. Why? 
Because Duro controls the quality, CON- 
TROLS the making of every piece or part 
that goes into the completed pump or sys- 
tem — Duro makes ALL of it. There is NO 
DIVIDED RESPONSIBILITY. 

Then comes the "picture story." How the 
problem of water was the first concern of 
humans from the beginning of time. How 
folks for centuries slaved for their water. 
Then came pumping systems and municipal 
waterworks — a great blessing. But the 
water mains stopped at the edge of the city. 
Suburban, town and country folk had noth- 



ing but antiquated hand pumps, oaken buck- 
ets and windmills. Then — along came DURO 
with an Automatic Electric Water System — 
a private water works for individual homes, 
banishing forever the drudgery, the slavery, 
the work and worry occasioned by the use of 
obsolete methods of getting water. Our 
great grandfathers used them, it's true — 
because they could get nothing better. 

Then the contrasting views of Duro- 
equipped homes, and homes without Duro. 
Pointing out its small cost— that the average 
cost of supplying water with Duro is LESS 
than the average cost of city water service. 
That the prospect CANNOT AFFORD to 
be without DURO. That it settles the water 
supply problem once and for all. 

When you sell Duro you have done the 
prospect a great favor — one for which he will 
thank you a thousand fold. There is NO 
ONE OTHER SINGLE THING that you 
could have sold him that will give him so 
much genuine satisfaction, dollar for dollar 
invested. Health, comfort, sanitation, fire- 
protection, release from drudgery, leisure 
time, convenience, happiness — why the bene- 
fits of Duro and all that it makes possible 
should be enjoyed by everyone. Go out and 
sell them. Show them the "picture story" 
page by page. 



DURO— WORLD'S LARGEST MAKERS-WORLD'S LARGEST SELLERS 



Water— <±A ^Problem Since J^jfe "Began 




DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 



Everything That J^ives Needs Water 




)EWIWO GALLOWAY- 
^UNDERWOOD I UNDERWOOD 



Even the donkey enjoys a life of comparative 
ease when one considers the unnecessary slavery of 
man-and-woman toil in getting water this way. 



<?AlllAiA AAiiAAilAAAJiAAl UAiAllui l} 




Public shower baths, like this in Japan, are found 
in some villages. But even in Japan, Duro is light- 
ening the burdens, and bringing gladness to the 
hearts of many. 



(AVAAAAAAAAAAAAAAAAAAAAAAAAilj^fcM, 








DURO— WORLD'S LARGEST MAKERS— WOR LP'S LARGES T SELLERS 

^lics of Qrandmothefs Time 



High winds caused the windmill to 
topple on this schoolhouse. Fortu- 
nately, it happened after the school 
session had closed, Otherwise a 
tragedy would have occurred. 





The farm home above burned to the ground. 
Only the brick foundation, and the useless 
windmill, remained. Water under strong pressure 
might have saved this home. 



To the left — the old oaken bucket — a relic 
of primitive insanitary water supply. 



DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 



Folks Still Slave for Water 




Boys and girls leave their 
homes on the farm, in the sub- 
urbs or in the villages to escape 
drudgery such as this. They 
are entitled to the advantages of 
modern improvements. 



r 



DURO— WORLD'S LARGEST MAKERS-WORLD'S LARGEST SELLERS 



Qranddad Thaws the Old Pump 




DURO— WORLD'S LARGEST MAKERS-WORLD'S LARGEST SELLERS 



^Anyone Qan Have *A T)uro System 




"And to think I used to 
work and wear myself out 
pumping and carrying wat- 
er. Now Duro has settled 
the water supply problem 
forever. Granddad was 
certainly an old dear to 
get it." 









l W^ 



t 



DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 

Hands In Water ^All T>ay J^ong 




Back - breaking 

Drudgery and 

Slavery — No 

time for rest 

Surely 

there is a 

better way. 




"For six years I've slaved 
'out here.' From the min- 
ute I awake in the morning 
until all the kiddies are 
scrubbed and put to bed I 
pump, pump, pump water, 
lug it in and then out 
again. How can I stand it 
much longer?" 



DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 



zMen K^now T>uro *As *An Investment 




Running water under pressure in the 
barn, for cleaning cow stalls and for 
supplying fresh, pure drinking water at 
an even temperature insures sanitary 
conditions, and an increased milk 
yield. 

Tired horses and tired men know 
what a fresh, cool drink of water 
means during a hard day's work. Duro 
can supply the needs of a hundred head 
of cattle with no work, worry or effort 
on your part. 



It's pretty nice to attach the hose 
and water the vegetable and flower 
gardens. You can have rain whenever 
you want it — if you're Duro-wise — 
water right in the poultry houses too. 

It doesn *t take long to clean the 
" old buss" when you have running 
water under pressure, the Duro- way — 
simply turn the faucets, that's all. And 
don't forget the importance of Duro 
as a means for fire protection. 



15 



DURO— WORLDS LARGEST MAKERS-WORLD'S LARGEST SELLERS 




Give your children the same 
advantages that other children 
enjoy. Let them get under the 
shower on a smothering hot day, 
or, even during the coldest 
spells in Winter. See how much 
more they enjoy their home life 
with a Duro. 

You'll never know all of the 
advantages of a Duro System 
until you have one. If you put 
off installing a Water System 
now, you may never have one; 
and you will miss an important 
part of the sheer joy of living 
which Duro affords. There will 
never be a better time than now 
to decide this important ques- 
tion. 



16 



Decide To Install DURO 

Today! 



There is no other single thing that will give 
you so much genuine satisfaction and service 
dollar for dollar invested as will a Duro Auto- 
matic water System. 

It benefits every member of your family 
and every living thing on your place. It pro- 
tects your health; it provides sanitation; it 
will give you a greater measure of comfort. 
It will release you from the slavery of pump- 
ing; it will give you more leisure time for 
other things. It is convenient and ever at 
your service — morning or evening — day or 
night. Fire insurance only partially covers a 
loss — by getting to the fire quickly in the 
start before it makes headway, you have a 
powerful fire- fighting apparatus in the form 
of a Duro Pressure System. Many Duro 
users have written us stating instances of 
where DURO has saved their home, or their 
barn and crops from possible complete de- 
struction. It is only necessary to have a 
disastrous fire once to wipe out the savings of 
a lifetime. 

The first consideration of any home owner 
should be the water supply — water is a most 
vital element of life itself — therefore, why not 
have it handy, ready at the turn of a faucet 
any minute of the day or night? 

DURO is not an expense — it is an invest- 
ment. It will pay for itself many times over. 
Here is an example: 

Suppose your daily consumption of water 
is as follows: 

Gallons 
Family of 5 (25 gals, per person per day)_125 

Eight cattle (at 9 gals.)_. _ ____, 72 

Six horses (at 8 gals.)___. 42 

Twenty-five hogs (at 2 Yi gals.) 63 

Twenty-five sheep (at 1 Yi gals.) 37 

Total Daily Consumption 345 



An ordinary hand pump will deliver about 
four gallons per minute. Therefore, it would 
take eighty-six minutes to pump 345 gallons. 

A Duro will pump this amount of water 
automatically and without attention. It 
would save you an hour and twenty-six 
minutes daily. At this rate it would save you 
31,034 minutes, or about 521 hours a year. A 
bricklayer earns anywhere from 80c to $1.50 
per hour. Surely you value your services, we 
will say for the sake of argument, at least at 
40c an hour. If you do, a Duro would save 
you 40c times 521 hours, or $208.40 a year, 
plus whatever you would earn by doing other 
things during the 521 hours you had saved. 

As stated before your requirements would 
approximate 345 gallons per day. Your well 
is located about 20 feet from the house and 
about 45 feet from the barn. It is, therefore 
safe to say that you carry your water at 
least 25 feet. In going after water and re- 
turning with it you walk 50 feet. 

Using two three -gallon buckets you would 
have to make fifty-seven trips and in so doing 
you would walk 2850 feet each day or 1,037,- 
400 feet a year. Or, in other words, 196 M> 
miles per year. 

One gallon of water weighs approximately 
eight pounds. 

Therefore, you carry 345 gallons of water 
a day or 2760 pounds, and in a year's time 
you would have carried 1,004,640 pounds or 
approximately 502 tons of water a distance 
of ninety-seven miles. 

Think of how little I am asking you for 
this water system! Think of all the other 
advantages from the standpoint of comfort, 
happiness and convenience that is made 
possible by a Duro! Can you afford to be 
without it in view of what it will do for you? 



17 



r 



Dependable, Superior and Up-to-date 
Duro Achievements! 

The steady, dependable performance of Duro Pumps is the result of the perfection of detail in manufacture. 
No finer pumps are built. No pumps equal Duro in accuracy and precision of manufacture. 

A close study of just a few of the more important patented, exclusive features following will give you some 
idea why Duro is considered the pace-maker in pump construction, and incidentally why Duro is the world's largest 
maker, and the world's largest seller. 

Familiarize yourself with these features so that you can explain their importance to the prospective purchaser. 




protecto 
Sleeve akd 
Collar 



Knurled Nut Glakd Packing 



®The Duro Stuffing Box is designed as near leak- 
proof as is mechanically possible. When packing 
becomes worn, a twist of the knurled knob 
tightens it immediately — there are no threads or ob- 
structions to interfere. It never pays the plumber to 
make a call to fix a leaky stuffing box because whatever 
charge is made is considered exorbitant by the custom- 
er. Sell the Duro — it eliminates stuffing box service. 
Note how the Protecto Sleeve and Collar makes it im- 
possible for water to get into the crank case. 




Priming 
Slot 




©Duro uses priming slots in the discharge valve 
seats which keep the pump continually primed. 
This slot is always washed clean by the action of 
the water passing over it, whereas, in the old type of 
priming tube the small holes become clogged and use- 
less. The priming slots prevent air-binding by allow- 
ing air to pass from piston chamber into the tank. 



®Duro originated 
the use of 
Schrader Bicycle 
Valves for air supply. 
This rubber type valve 
does not leak and in- 
sures perfect seating. 




®A wipe and splash, gravity feed oiling system in- 
sures perfect lubrication. Note how the wiper 
(A) distributes the oil at the ribs. It then runs 
down grooves (B) by gravity to all bearings and mov- 
ing parts. The Duro oiling system is as positive and 
perfect as modern science and engineering skill can 
make it. The precision of the mechanism itself insures 
minimum oil requirements. Note the oil rod gauge. 
Oil level should rest at top notch on rod. 




©Both Suction and Discharge Unions are supplied 
with Duro. This eliminates extra cost to the 
plumber in installing. It enables you to connect 
and disconnect the system without worry or trouble. 
It permits easy drainage of the pump. Both suction 
and discharge unions are standard on all Duro Systems 
Just another convenience which we have provided in 
your interests and for your economy. 



Discharge 




18 



Only In Duro Can These Many 
Refinements Be Found 

Duro alone has pioneered practically all of the important achievements in pump construction. Twenty-one 
major improvements, which are now generally used, were originated and developed by Duro. However, no one but 
Duro can use the many patented features incorporated only in Duro Pumps. This is your protection. 

There are many features too numerous to mention, among which is the arrangement of one- half air and one-half 
water in tanks, giving greater withdrawal capacity. Also, the constant, self-primed pump by reason of the suction 
intake being higher than the discharge deck. 




©The Duro patented two- 
pole automatic switch is of 
the toggle joint principle 
(C). It starts and stops the 
pump automatically. The two- 
pole switch prevents grounding 
of motor. It eliminates burned- 
out motors due to lightning. 
The connections (A) from the 
motor to the switch are made at 
the Duro Factory, insuring 
against burn-outs and trouble 
due to wrong connections. 

The patented toggle joint prin- 
ciple positively eliminates all 
possibility of the switch not 
operating because of friction. 
Duro uses a rubber diaphragm 
(D). Therefore, no trouble is 
experienced with crystallization 
as happens when metal dia- 
phragms are used. 




® 



The Duro combination Water and Pressure Indicator is now standard on all Duro systems. It is an instru- 
ment similar to those on the dash board of your automobile. It eliminates broken water glasses and flooded 
basements due to that cause. It is simple, practical and reliable. 




The Duro Strainer keeps dirt and foreign matter 
from getting under the valve seats of the pump. 
The mesh of the screen is small enough to pre- 
vent destructive foreign matter from entering the 
pump. The screen and plug are assembled together 
and are located so that the screen may be easily re- 
moved for cleaning. This construction also maintaini 
the screen in its proper position in the vacuum chamber. 



®Duro-Made Repulsion- Induction Motors are equipped with the 
Duro patented short-circuiting device — an exclusive Duro feature. 
Its construction is simple. It is positive in action — and trouble- 
proof. Duro Repulsion- Induction Motors are made in the big Duro 
Factory. They greatly reduce current consumption at starting. They 
will not overheat and burn out in starting on heavy loads and under 
varying voltage conditions as do other types of motors. 

Motor trouble in connection with Duro Repulsion- Induction motors is 
practically unknown. Any Duro dealer who has installed great numbers 
of Duro Pumps will testify to this indisputable fact. The returns on Duro 
Repulsion-Induction Motors are less than one-half of one percent for any 
cause whatsoever — a remarkable record. 




19 



NONE SHALL SURPASS DURO PRECISION AND QUALITY 



Cross Section of The Famous 

Duro Pump 




The No. 250 Is Typical of Duro Suction Pump Construction 



Look at the simplicity of construction — the neatness — the 
compactness — all reflecting painstaking precision in manu- 
facture, and extreme economy in operation. 

The illustration is typical of the essential working parts of 
all types of Duro Suction Pumps. Conscientiously built to 
last a lifetime. Slower in operating speed. Above all, 
efficient and durable. 

Notwithstanding the low selling price, it costs more to 
build a Duro Pump. There is no cumbersome bulkiness. 
No mass of purposeless cast-iron. Rather, all castings are 
perfectly moulded, machined and balanced for 200% over- 
strength. 

Yes, it costs more to machine Duro working parts from 



high-carbon steel, from phosphor bronze, and from brass to 
tolerances one-half the thickness of a human hair. But it 
pays. 

Every part, every detailed operation, every movement in 
assembly must pass inspection after inspection. This in- 
spection is simply insurance against trouble or service in 
operation. When finally assembled, all pumps are put on 
the test block for hours for the "run in" test. Then they are 
subjected to tests much more severe than is experienced in 
actual usage. 

Every pump is tested to pull 26" of vacuum. This is 
equal to lifting and sustaining a column of water over 29 feet 
in height, although the pumps are recommended for not more 
than a 22 feet lift. 



20 



EVERY DURO DEALER SHOULD HAVE A DEMONSTRATOR 



DURO Salesroom Demonstrators 

The impressions received through the eye are twenty-one times as strong as those received through the 
ear. Hence the importance of a sales room demonstrator. When a prospect calls at your store he calls for 
one reason only, and that is to see what he intends to buy. If you are equipped to let him turn the faucet 
and see the splash of running water under strong pressure, desire is created immediately. Dealers who 
sell several hundred water systems a year invariably use demonstrators — either salesroom or automobile. 




The illustration above shows the 
No> 412 Demonstrator. 

Mysterious Faucet Demonstrator No. 414 

The illustration to the right shows the Mysterious Faucet Demonstrator. It has 
action ; it has mystery. It arouses curiosity. It directs attention to the article you want 
to sell and the service that it performs. 

It consists of: 1 — Bell- shaped non- splash funnel. 

1 — No. 252 " Vertitank" system complete. 1 — Faucet for sink. 

1 — Galvanized Surge Tank. 1 — Mysterious Faucet Set complete. 

All necessary fittings, as shown in illustration, are included. 



Demonstrator No. 416 

Not Illustrated 

This Portable Automobile Demonstrator 
consists of the following: 
1— No. 250 Electric Pump of 250 gallons per 
hour capacity, equipped with 110-220 
volt A. C. motor. 
1 — Extra 32 volt DC motor for above. 
1 — 1" suction hose, 25 ft. long, to drop into 

the shallow well. 
1 — }/%' Discharge hose, 15 ft. long, for demon- 
strating purposes. 
This outfit can be placed on the back of 
your automobile, permitting you to demon- 
strate from shallow wells in the prospect's 
home. 



Demonstrator 
No. 415 

This is the same as the 
Mysterious Faucet Dem- 
onstrator No. 414 except 
less the mysterious faucet 
arrangement. 

It is provided with a 
faucet and a non-splash 
funnel as is shown in the 
illustration to the right. 
It consists primarily of a 
No. 252 "Vertitank" sys- 
tem with a 250 gallon per 
hour pump. 



Demonstrator 
No. 412 

Consists of — 

1— No. 252 "Vertitank" Sys- 
tem complete with 2 5 
gallon per hour capacity 
pump and 30 gallon gal- 
vanized tank. 

-Enameled kitchen sink, 
lettered as shown in illus- 
tration to the left. 

3 — Nickeled sink faucets, as 
shown to the left. 

1 — Galvanized Surge Tank. 

2 — Iron standards for sink. 

1 — Set of pipes and fittings 
for all connections, com- 
plete as shown in illustra- 
tion to the right. 

This Demonstrator makes 
a neat and attractive display 
in the sales room. As it is 
equipped with fresh water 
valve the prospect can be 
shown how water is drawn 
direct from well for drinking 
purposes, or, through the sys- 
tem for general use. 




No. 414 Demonstrator 



21 



DURO— WORLD'S LARGEST M A K E R S— W O R L D ' S LARGEST SELLERS 



Famous DURO "No. 77" Automatic 
Fresh Water System 



Completely 
Automatic 

in 
Operation 




Fresh 
Water 
Direct 

from 
Well 



CAPACITY 200 GALLONS PER HOUR 

Suction, l"\ Discharge, 14*1 Maximum Vertical Suction Lift, 22'; Shipping Weight, 100 lbs. 
Overall Dimensions, 10" wide, 24" high, 26" long. 



Its Use — For small homes, cisterns, yachts, 
camps and summer cottage service, where the 
source of supply is a shallow well, spring, stream, 
lake or cistern. 

Type of Pump — Reciprocating, double-acting 
single cylinder, with 200 gallon per hour capacity. 
Operating Pressure — Electric Pressure Con- 
troller set to cut in at about 25 pounds and to cut 
out at about 40 pounds. 

Fresh Drinking Water — This system sup- 
plies fresh water direct from the well at all times. 



Sprinkling — For lawn or garden hose, the pump 
will maintain a J^-inch hose with nozzle partially 
closed. 

Operating Cost — 10c per 1000 gallons with 
current at 10c per Kw. hour; which is less than the 
average cost of city water service. 

Electric Motor— Special Duro Repulsion-In- 
duction type with surplus power, furnished as 
standard. See price sheet for special voltages. 
Always specify voltage, cycles and phase, if alter- 
nating current; and voltage if direct current. 



Specifications of No. 77 "DURO" Automatic Water System 



Size of 

Complete 

System 



Cap. 

per Hr. 

Gals. 



Suction 



Discharge 



Overall Dimen- 
sions, Inches, 
Wth.-Dth.-Ht. 



Shipping 

Weight of 

System 



No. 77 



200 



1* 



W 



24x10x26 



100 lbs. 



Note— The Style No. 77 System is sold only as a complete unit. It is equipped with 

Relief Valve. 
In Ordering — Give current specifications. If alternating current motor is wanted, specify cycle, phase 
and voltage. If direct current, specify voltage. 
Wall Bracket — Can be supplied at extra cost; see price sheet. 



DURO— WORLDS LARGEST MAKERS-WORLDS LARGEST SELLERS 

DURO Automatic "Vertitank" 

Systems 




Duro "Vertitank" Systems are recommended where a com- 
plete automatic, electric, self-contained water supply system 
is needed to furnish fresh running water service under de- 
pendable pressure. They are made in sizes for small, medium 
and large homes. For shallow wells, springs, lakes, streams 
or cistern service, where the vertical depth to water does not 
exceed 22 feet. 



This illustrates the No. 252 Verti- 
tank. The No. 202 and No. 402 are 
similar in appearance, but have differ- 
ent pump capacities. 



Complete Outfit Includes 

1 — "Duro" Reciprocating, Double-acting, Suction 
Pump, complete with motor, automatic pressure 
controller, and relief valve. 

1 — 30-gallon Galvanized Pressure Tank. 

1 — Duro Combined Pressure and Water Indicator, 

1 — High Grade Angle Valve. 

1 — Set of pipe fittings between pump and tank. 

1 — Container Base with legs, for pump and tank. 

Note— If legs are not wanted a deduction 
In price is made. See Price Sheet. 



Correct in Principle 

The "Vertitank" is admittedly the best engineering prac- 
tice. Less water surface to come in contact with and absorb 
air — preventing water logging. This principle is endorsed by 
all leading water supply engineers, architects and plumbers. 



Cost of Operation 

10c per 1000 gallons with current at 10c per Kw. hour, 
which is less than average cost of city water service. 



Specifications of "DURO" Automatic "Vertitank" Systems 



Size of 

Complete 

System 


Pump Cap. 
per Hr. 

Gals. 


Style of 
Pump 


Suction 


Discharge 


Capacity 

of 

Tank 


Overall Dimen- 
sions, Inches 
Wth.-Dth.-Ht. 


Shipping 

Weight of 

System 


202 
252 
402 


200 
250 
400 


88 

250 

400 


1 " 
1 " 

IX* 


1 " 


30 gals. 
30 gals. 
30 gals. 


26x32x47 
29x32x47 
29x32x47 


190 lbs. 
205 lbs. 
230 lbs. 



In Ordering — Specify "Vertitank" System Number, and specify voltage if Direct Current. 
Dating Current, specify voltage, cycles and phase. 

23 



If Alter- 



r 



DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 

No. 88 Double- Acting Single 
Cylinder Suction Pump 




CAPACITY 200 GALLONS PER HOUR 

Suction, 1"; Discharge, %*\ Maximum Vertical Suction Lift, 22'; Shipping Weight, 100 lbs. 
Overall Dimensions, 10" wide, 24" high, 26" long. 



Its Use — For summer cottages, cistern and small 
home service, where the source of supply is a shallow 
well, spring, stream, lake or cistern. 

Type of Pump — Reciprocating, double-acting, 
single cylinder, suction pump, with drop forged 
high carbon steel crankshaft; phosphor bronze 
main bearing, connecting rod and connecting rod 
bearings, and tobin bronze piston rod. 

Capacity — 200 gallons per hour against 40 
pounds pressure. 

Operating Pressure — Electric Pressure Con- 
troller set to cut in at about 25 pounds and to cut 
out at about 40 pounds. 

Sprinkling — For lawn or garden hose, the pump 
will maintain a H-inch hose with nozzle partially 
closed. 

Wall Bracket — Supplied at extra cost. 



Operating Cost — 10c per 1000 gallons with 
current at 10c per Kw. hour; which is less than the 
average cost of city water service. 

Fresh Drinking Water — Supplied by using a 
Duro Fresh Water Valve. (See pages on accessories.) 

Electric Motor — Special Duro Repulsion-Induc- 
tion type with surplus power, furnished as standard. 
See price sheet for special voltages. Always specify 
voltage, cycles and phase, if alternating current; 
and voltage if direct current. 

Special Features and Construction — Else- 
where may be found details of patented, exclusive 
features; and, superiorities of quality, construction, 
and workmanship. 

In Ordering — Specify No. 88 Pump, and give 
motor specifications. If complete system is wanted 
see opposite page. 



24 



i 



DURO— WORLDS LARGEST MAKERS-WORLD'S LARGEST SELLERS 



Style 880 Automatic System 




Automatic, Electric, Self-contained System for small 
homes, summer cottage, camp and cistern service, where the 
requirements do not exceed 200 gallons per hour. 



Complete Outfit Includes 

1 — No. 88 "Duro" Double-acting, Single Cylinder, 
Slow -speed Pump, complete with Motor and 
Automatic Pressure Controller. 

1 — Special Pneumatic Pressure Tank. 

1 — Duro Combined Pressure and Water Indicator. 

1 — Duro Pressure Relief Valve. 

1 — High Grade Angle Valve. 

1 — Set of pipe fittings between pump and tank. 

1 — Container Base for pump and tank — (for 42 and 
80 gallon capacity tanks only). 



Capacity of Pump ZOO gals, per hour 

Suction, 1"; Discharge, %" 



Its Use 

Style 880 Systems furnish the equivalent of city water 
service to small homes, yachts, summer cottages, camps, etc., 
also for cistern use. It pumps the water from shallow wells, 
springs, lakes, streams and cisterns. For use where vertical 
depth to water does not exceed 22 feet. 



Cost of Operation 

10c per 1000 gallons with current at 10c per Kw. hour, 
which is less than average cost of city water service. 



Specifications of No. 880 "DURO" Automatic Water Systems 



Size of 

Complete 

System 


Pump Cap. 

per Hr. 

Gals. 


Capacity 

of 

Tank 


Tank Dimen- 
sions, Inches, 
Dia.-Ht. 


Overall Dimen- 
sions, Inches, 
Wth.-Dth.-Ht. 


Shipping 

Weight of 

System 


880-A-8 
880-B-8 
880-C-8 
880-D-8 


200 
200 
200 
200 


42 

80 

120 

220 


16x48 
20x60 
24x60 

30x72 


26x32x52 
26x32x64 
28x34x64 
30x36x76 


175 lbs. 
224 lbs. 
270 lbs. 

455 lbs. 



The above tanks are furnished vertical except when ordered horizontal. Specify exact size and state 
whether black or galvanized. Container base furnished with 42 and 80 gallon capacity tanks only. Also, 
specify voltage if Direct Current. If Alternating Current, specify voltage, cycles and phase. 



DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 



No. 250 Double- Acting, Single 
Cylinder Suction Pump 




Suction, 1*: 



USE 5/16" BOLTS 
CAPACITY 250 GALLONS PER HOUR 

Discharge, %*\ Maximum Vertical Suction Lift, 22'; Shipping Weight, 
Overall Dimensions, 11" wide, 24" high, 27" long. 



105 lbs. 



Its Use — For average homes, and small farms and 
institutions where the source of supply is a shallow 
well, spring, stream, lake or cistern. 

Type of Pump— Reciprocating, double-acting, 
Single Cylinder, Automatic, with drop forged high 
carbon steel crankshaft; phosphor bronze main 
bearings, connecting rod and connecting rod bear- 
ings, and tobin bronze piston rod. 

Capacity — 250 Gallons per hour against 40 
pounds pressure. 

Operating Pressure — Electric Pressure Con- 
troller set to cut in at about 25 pounds and to cut 
out at about 40 pounds. 

Sprinkling— For lawn or garden hose, and fire 
protection, the pump will maintain a Y 2 inch hose 
with nozzle practically wide open. Will give full 
flow from shower bath fixture. 



Operating Cost— 10c per 1000 gallons with 
current at 10c per Kw. hour; which is less than the 
cost of city water service. 

Fresh Drinking Water 

Duro Fresh Water Valve. 
sories.) 

Electric Motor — Special 

duction type with surplus 

standard. See price sheet 

Always specify voltage, cycles and phase, if alter 

nating current; and voltage if direct current. 

Special Features and Construction— Else 

where is shown patented exclusive features, as well 
as superiorities in construction, quality and work 
manship. 

In Ordering— Specify No. 250 Pump and give 
motor specifications. If complete system is wanted 
see opposite page. 



— Supplied by using a 
(See pages on acces 

Duro Repulsion-In 

power, furnished as 

for special voltages 



26 



D U R O— W ORLD'S LARGEST MAKER S— W ORLD'S LARGEST SELLERS 



Style 250 Automatic System 




Automatic, Electric, Self-contained System for village, 
suburban and country homes, where an average amount of 
water is required. 



Complete Outfit Includes 

1— No. 250 "Duro" Double-acting, Single Cylinder, 
Slow-speed Suction Pump, complete with Motor 
and Automatic Pressure Controller. 

1 — Special Pneumatic Pressure Tank. 

1 — Duro Combined Pressure and Water Indicator. 

1 — Duro Pressure Relief Valve. 

1 — High Grade Angle Valve. 

1 — Set of pipe fittings between pump and tank. 

1 — Container Base for pump and tank — (for 42 and 
80 gallon capacity tanks only). 



Capacity of Pump 250 gals, per hour 

Suction, 1"; Discharged". 



Its Use 

Style 250 Systems furnish the equivalent of city water serv- 
ice to village homes and ordinary size suburban, farm, and 
country homes where electric current is available, pumping 
the water from shallow wells, springs, lakes, streams and 
cisterns. For use where vertical depth to water does not 
exceed 22 feet. 



Cost of Operation 

10c per 1000 gallons with current at 10c per Kw. hour, 
which is less than average cost of city water service. 



Specifications of No. 250 "DURO" Automatic Water Systems 



Size of 


Pump Cap. 


Capacity 


Tank Dimen- 


Overall Dimen- 


Shipping 


Complete 


per Hr. 


of 


sions, Inches, 


sions, Inches, 


Weight of 


System 


Gals. 


Tank 


Dia.-Ht. 


Wth.-Dth.-Ht. 


System 


250-A-2 


250 


42 


16x48 


29x32x52 


225 lbs. 


250-B-2 


250 


80 


20x60 


29x32x64 


280 lbs. 


250-C-2 


250 


120 


24x60 


29x36x64 


310 lbs. 


250-D-2 


250 


220 


30x72 


30x44x76 


510 lbs. 


250-E-2 


250 


315 


36x72 


36x50x76 


610 lbs. 



The above tanks are furnished vertical except when ordered horizontal. Specify exact size and state 
whether black or galvanized. Container base furnished with 42 and 80 gallon capacity tanks only. Also, 
specify voltage if Direct Current. If Alternating Current, specify voltage, cycles and phase. 

27 



DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 



No. 400 Double- Acting Duplex 

Suction Pump 




USE 7ie BOLTS 
CAPACITY 400 GALLONS PER HOUR 

Suction, 13^"; Discharge. 1"; Maximum Vertical Suction Lift, 22'; Shipping Weight, 130 lbs. 
Overall Dimensions, 12" wide, 25" high, 29" long. 



Its Use — For larger homes, farms and institu- 
tions where the source of supply is a shallow well, 
spring, stream, lake or cistern. 
Type of Pump — Reciprocating, double-acting; 
duplex, automatic, with drop forged high carbon 
steel crankshaft; phosphor bronze main bearing, 
connecting rod and connecting rod bearings, and 
tobin bronze piston rod. 

Capacity— 400 gallons per hour against 40 
pounds pressure. 

Operating Pressure — Electric Pressure Con- 
troller set to cut in at about 25 pounds and to cut 
out at about 40 pounds. 

Sprinkling — For lawn or garden hose, and fire 
protection, the pump will maintain a 3^-inch hose 
with nozzle wide open, or two 3^ -inch hose with 
nozzles partially closed. Will give full flow from 
shower bath fixture. 



Operating Cost — 10c per 1000 gallons with 
current at 10c per Kw. hour; which s less than the 
average cost of city water service. 

Fresh Drinking Water — Supplied by using a 
Duro Fresh Water Valve. (See pages on accessories) 

Electric Motor — Special Duro Repulsion-Induc- 
tion type with surplus power, furnished as standard. 
See price sheet for special voltages. Always specify 
voltage, cycles and phase, if alternating current; 
and voltage if direct current. 

Special Features and Construction — Else- 
where may be found details of patented, exclusive 
features; and, superiorities of quality construction 
and workmanship. 

In Ordering — Specify No. 400 Pump, and give 
motor specifications. If complete system is wanted 
see opposite page. 



28 



DURO— WORLD'S LARGEST MAKERS-WORLD'S LARGEST SELLERS 



Style 400 Automatic System 




Capacity of Pump 400 gallons per hour 
Suction, 134" Discharge, 1" 



Automatic, Electric, Self-contained System for village, 
suburban and country homes, where a large amount of water 
is required. 



Complete Outfit Includes 

1 — No. 400 "Duro" Double-acting, Duplex Suction 
Pump, complete with Motor and Automatic 
Pressure Controller. 

1 — Special Pneumatic Pressure Tank. 

1 — Duro Combined Pressure and Water Indicator, 

1 — Duro Pressure Relief Valve. 

1 — High Grade Angle Valve. 

1 — Set of pipe fittings between pump and tank. 

1 — Container Base for pump and tank — (for 42 and 
80 gallon capacity tanks only). 



Its Use 

Style 400 Systems furnish the equivalent of city water 
service to village homes, and large size suburban and country 
homes where electric current is available, pumping the water 
from shallow wells, springs, lakes and streams. For use 
where vertical depth to water does not exceed 22 feet. 



Cost of Operation 

10c per 1000 gallons with current at 10c per Kw. hour, 
which is less than average cost of city water service. 



Specifications of No. 400 "DURO" Automatic Water Systems 



Size of 


Pump Cap. 


Capacity 


Tank Dimen- 


Overall Dimen- 


Shipping 


Complete 


per Hr. 


of 


sions, Inches, 


sions, Inches, 


Weight of 


System 


Gals. 


Tank 


Dia.-Ht. 


Wth.-Dth.-Ht. 


System 


400-A-4 


400 


42 


16x48 


29x32x52 


260 lbs. 


400-B-4 


400 


80 


20x60 


29x32x64 


315 lbs. 


400-C-4 


400 


120 


24x60 


29x36x64 


350 lbs. 


400-D-4 


400 


220 


30x72 


30x44x76 


550 lbs. 


400-E-4 


400 


315 


36x72 


36x50x76 


650 lbs. 


400-H-4 


400 


525 


36x120 


60xl20x36(horz.) 


900 lbs. 



The above tanks are furnished vertical except when ordered horizontal. Specify exact size and state 
whether black or galvanized. Container base furnished with 42 and 80 gallon capacity tanks only. Also 
specify voltage if Direct Current. If Alternating Current, specify voltage, cycles and phase. 

29 



DURO SYSTEMS GUARANTEE SATISFACTORY WATER SERVICE 

No. lOO Heavy Duty Suction Pumps 




Capacities 600, 900, 1200 and 1500 Gallons per Hour. See Specifications Below 

Suction, 1}4"\ Discharge Openings on Either Side of Air Dome, \ X A" . 
Maximum Vertical Suction Distance, 22'. Overall Dimensions, 20 ff wide, 24" high, 54* long. 

Its Use 

An individual waterworks plant for the larger Suburban and Country Homes, Small Truck Farms, Greenhouses, Factories, 
Office Buildings, Country Clubs, Country Schools, Dairies, Small Villages with overhead tanks, etc., where more than the average 
amount of water is needed. Furnished as standard with tanks ranging in capacities from 120 to 525 gallons. Larger tank sizes 
quoted upon application. See opposite page for complete system. Completely automatic, starting and stopping under standard 
pressures of 25 to 40 pounds. Built for 125 pounds pressure. From the standpoint of engineering, design and construction, Style 
100 Heavy Duty Suction Pumps embody the latest improvements and developments in pump engineering. Note the special 
features. 

Cost of Operation — 10c per 1000 gallons with current at 10c per Kw. hour, which is less than average cost of city water service. 



Special Features 



Repulsion- Induction Motors of greater starting torque. 

Silent Chain Drive with a double reduction. 

Two discharge openings. 

New Style Valve Construction. No tools required to take 

apart. 
New improved style Stuffing Box. 
Crank Case absolutely water proof. 
Improved style Piston which can be easily removed. 
Shafts are heavy high carbon forged steel, ground, with large 

phosphor bronze bushings on each end — automatically 

lubricated. 
Large Wrist Pin Bearings, and an adjustable Crank Pin 

Bearing. 
Union connections for both suction and discharge. 



Supplied with two air devices in case extra large tanks are used. 

Rigidly constructed and massive. 

Very quiet running and efficient in operation. 

Pump is supplied with sight oil gauges. Insures proper oil 
level at all times. 

Two-pole Switch. Mounted on Air Chamber, but does not 
come in contact with the water. 

All wire connections from motor to switch are made. 

Relief valve is mounted in Air Chamber, insuring correct in- 
stallation and proper functioning. 

Drain plugs provided to drain pump easily and prevent freez- 
ing. 

Provided with large suction Strainer. Prevents dirt getting 
into the Pump. 



Specifications of No. 


lOO 


Heavy Duty Suction Pumps 


Pump Cap. 
Size Per Hr. Pump 
No. Gals. R.P.M. 




Size of 
Motor 


Overall Dimen- 
sions, Inches, 
Wth.-Ht.-Lgth. 


Pump 

Shipping 

Weight 


105 600 150 
115 900 150 
125 1200 150 
135 1500 150 




J^H.P. 

MH.P. 

1 H.P. 

\y 2 h.p. 


20x24x54 
20x24x54 
20x24x54 
20x24x54 


350 lbs. 
400 lbs. 
400 lbs. 
410 lbs. 



For odd cycle motors see price sheet. 32-volt motor supplied only with 105 Pumps and then it is recommended that light 
plant generator be started when operating pump. 

In ordering specify size pump wanted. Also give voltage if Direct Current. If Alternating Current, give voltage, cycles and 
phase. To order complete system order pump and also tank and fittings on opposite page. 

30 



I 



DURO-WORLD S LARGEST MAKERS-WORLD'S LARGEST SELLERS 



Style 500 Automatic System 




Pump Made in Four Sizes and Capacities 600, 900, 1200 and 1500 Gallons per Hour 

Lifted as Standard with Four Different Size Tanks ranging in capacity from 120 to 525 gallons. Larger sized tanks quoted upon 

application. 
Suction, \}4"\ Discharge Openings on Either Side of Air Dome, 1 %\ Maximum Vertical Suction Distance, 22'. 

Its Use 

As this system consists of a No. 100 pump, described on the opposite page, it is suitable for the same 
requirements. In selecting the size system read carefully "Guide to the Selection of a Water System." 

" ' \ 



Complete System Includes 



1- No. 100 Style "DURO" Double-Acting, Duplex Electric 

Pump complete with Motor and Pressure Controller. 
1 — Pressure Gauge and Water Indicator combined. 



1— "DURO" Pressure Relief Valve. 

1— High Grade Gate Valve. 

1 — Heavy Gauge Pressure Tank. 



How To Order Complete System 

Refer to opposite page and choose the capacity No. 100 pump wanted; give motor specifications. 
Then refer to tank and accessories specifications below. For instance, if you want a 600 gallon an hour 
pump with a 220 gallon tank and accessories you would order as follows: One (1) No. 105 Pump, 110-60 
cycle, with D-5 galvanized (or Black) Tank, and accessories. 

To get price of complete system add the price of the pump to the price of the tank and accessories, 
as shown on the price sheet. 

Specifications of No. goo "DURO" Automatic Water Systems 



Size of 

Tank and 
Accessories 



Capacity 

of 

Tank 



Tank Dimen- 
sions, Inches, 
Dia.-Ht. 



Overall Dimen- 
sions, Inches, 
Wth.-Dth.-Ht. 



Shipping 

Weight of 

System 



C-5 

D-5 
E-5 
H-5 



120 
220 
315 

525 



24x60 
30x72 
36x72 
36x120 



48x62x54 
54x74x54 
60x74x54 
60x40x120 



600 lbs. 

800 lbs. 

930 lbs. 

1150 lbs. 



All tanks 72 inches or less in length are furnished vertical unless ordered otherwise. 
inches in length are furnished horizontal. Specify whether black or galvanized. 

31 



Tanks over 72 



DURO POWER DRIVEN SHALLOW WELL PUMPS 



No. 2400-P and No. 2250-P Belted 

Suction Pumps 




USE 5/16' BOLTS 



Pump No. 2400-P 

Capacity 400 Gallons per Hour 
Maximum vertical suction lift 22 ft. 

Suction 1 J4 ", Discharge 1 ", Discharge Pressure 
40 lbs., 1J4* Stroke; R.P.M. Pulley 222; Size 
of Pulley, diameter 11 ", face 2"; dimensions 12" high 
x 11" wide x 21" long; Shipping Weight 75 lbs. 

Style No. 2400-P is the same as our No. 400 Elec- 
tric Pump, excepting it is stripped of the motor stand, 
switch, motor, idler, and belt but equipped with 
a driving pulley and mounted so that it can be 
driven from a gasoline engine or an electric motor. 
It is a duplex double-acting pump. 



Pump No. 2250-P 

Capacity 250 Gallons per Hour 
Maximum vertical suction lift 22 ft. 

Suction 1", Discharge ^", Discharge Pressure 
40 lbs., \y 2 " stroke; R.P.M. Pulley 222; Size of 
Pulley, diameter 11", face 2"; Dimensions, 12' 
high x 9" wide x 21 " long; Shipping Weight 65 lbs. 



Pump No. 2250-P is the No. 250 Electric Pump; mounted the same as the No. 2400-P shown above, 
a single cylinder, double-acting suction pump. 



It is 



No. lOO-P Belted Suction Pump 



Its Use 

The Style 100-P Power Pump is for use where 
the customer has his own power. These different 
pumps can be operated by electric motors equal in 
size to the ones listed with the No. 100 Pump 
complete ; or from a line shaft. If engine is used as 
direct drive it should have twice the horse power 
of motor specified on page showing No. 100 Electric 
Pump Specifications. These pumps are suitable 
for pumping from any source of supply where the 
vertical suction lift is not more than 22 feet, and 
for a discharge pressure of 40 pounds. 



Special Features 

No. 100-P pumps embody all the good qualities 
of the No. 100 electric, automatic pumps. The 
pump is stripped of motor, chain drive and switch, 
mounted on a shorter base and equipped with 
driving pulley. 




Suction lj^"; Discharge Opening on either side of Air Dome lj^ r ; 
Pulley Diameter 9}4"; 150 R. P. M.; Pulley Face 2 3/£"; Maximum 
Suction Lift 22'; Shipping Weight 275 lbs.; Overall Dimensions 20" 
wide, 24" high, 42" long. 



Size Number 
105-P 
115-P 
125-P 
135-P 



Cap. in Gals. 

600 

900 
1200 
1500 



32 



DURO— GUARANTEED — PUMPS AND RESIDENCE WATER SYSTEMS 



Booster Installation 

Where city water pressure is insufficient to provide good water service on uppermost floors of dwellings, 
apartments, schools, hotels, public buildings, etc., a DURO Booster System should be used. 

The DURO Booster System "steps-up" the city water pressure and makes water available under good 
pressure upon the top floors. 

If the city pressure fluctuates so that sometimes sufficient pressure may be had and at other times it 
is insufficient, the DURO Booster System may be operated only during such low-pressure periods. This 
is accomplished by valve arrangement and by-pass. 



Where To Install 

When water flows to the pump a head of water is on the suction side of the pump. This head may 
be one pound or more, but should always be as small as possible to give good pumping action. Pump 
should be placed at the highest possible point in order to reduce the head on the pump. 




TABLE 
Size Pump Size Air Chamber 

250 iy 2 " dia. x 3' long 

400 2 " dia. x 4' long 

105 2}4" dia. x 4' long 

115 V/i" dia. x4' long 

125 3 " dia. x 5' long 

135 3 " dia. x 5' long 



Air Chamber 

In some cases it is not possible to con- 
trol this head on the suction side of the 
pump. The following instructions should 
then be followed: 



First. Install an air chamber as shown 
in cut and dimensions given in the table. 
This air chamber serves to cushion the 
water on each stroke of the pump and 
eliminates water hammer. To replenish 
the air in this chamber, close valve A and 
remove plugs B. When all the water has 
been drained out replace plugs B and open 
valve A until a point is reached where the 
pump gives the best results. 

Second. To replenish the air in storage 
tank, remove cap on valve C until the 
proper air level is reached. Then replace 
cap. Should valve C fail to give off a 
hissing noise, which indicates that it is 
pumping air, close valve A until it does. 
After air level has been reached, replace 
cap C and open valve A to original point. 

Third. To by-pass the pump close 
valves A and D, and open valve E. 



II 



PROMPT SERVICE LEADS TO INCREASED SALES VOLUME 



DURO Service Kits 





Here's the Service Kit you've been wanting. In each case we are furnishing this material in a steel 
cabinet, built like a metal filing cabinet. This Steel Kit is sixteen inches long by nine inches wide by 
eleven inches deep — fitted with a steel compartment tray. A well-built job which will be found very 
handy and useful. Included with each kit is a set of Instruction Books. It is furnished with three separate 
sets of equipment. The No. 30 includes Pump special tools and service parts. The No. 35 includes Auto, 
matic Softener special tools and service parts. The No. 40 includes both Pump and Automatic Softener 
tools and service parts. The total cost is less than the net cost of the tools and repair parts. 



No. SO Pump Service Kit 

It includes: 

1 — Crank Shaft Clamp, for holding crank shaft while re- 
moving or assembling pulley. 

1 — Double end Stuffing Box Tool, for removing stuffing boxes 
from No. 1901, 1902, 77, 88, 102, 250,400 and 104 pumps. 

I — Lever Handle for above tool. 

I — Valve Seat Tool for Shallow Well Pumps. 

I — Lever Handle for above tool. 

1— Piston Nut Tool for Shallow Well Pumps. 

1 — Piston Rod Guide Tool, to prevent piston rod from dam- 
aging packing, for Shallow Well Pumps. 

I — Packing Hook, to remove old packing from Stuffing Boxes, 

Automatic Pump Service Parts 

8— No. 161 Cups. 
6 — No. 53 Cups. 
4— No. 329 Cups. 
2 — No. 165 Valve Insides. 
12 — No. 124 valves. 
2 — No. 141 Gaskets. 
2— No. 257 Gaskets. 
2— No. 112 Gaskets. 
2— No. 212 Gaskets. 
2 — No. 150 Cups. 
2— No. 25 Cups. 
4— No. 29 Seldens. 
2— No. 28 Dunce Caps. 
2 — No. 138 Diaphragms. 
2— No. 226 Gaskets. 
6 — No. 20 Springs. 

The tools and service parts are packed in the steel kit de- 
scribed above. 



No. 35 Softener Service Kit 

It includes: 

1 — Pressure Gauge to ascertain pressures. 

1 — Strainer and Testing Tube connection, for use with 

Pressure Gauge. 
1 — Valve Plug Tube for testing valves against leakage. 
1 — Spanner Wrench, for holding Valve Plates while tightening 

nuts. 
1 — Socket Wrench for tightening Valve Nuts. 
1 — Distance Gauge for checking the setting of the Diaphragm 

Plates. 
1 — Socket Wrench for removing Valve Seats. 
1 — Socket Wrench for removing Meter Box and Brine 

Assembly Valve seats. 
1 — Socket Wrench Lever Handle for above. 
2 — End Wrenches for adjusting Brine Assembly. 

Automatic Softener Service Parts 

6 — No. 138 Diaphragms. 

6— No. 27 Gaskets. 

6— No. 4213 Valve Seat Gaskets. 

2— No. 4050 Ball Valve Seats. 

3— No. 4105 Meter Gaskets. 

2— No. 2933 Manhole Gaskets. 

3 — Mineral Tank Head Gaskets- 

AS-2 (or AS-3), and AS-4. 
6— No. 57 Gaskets. 
6— No. 4051 Valve Rubbers. 
2— No. 4240 Meter Valve Springs. 
2— No. 4069 Brine Valve Springs. 
1— No. 4074 "A" Brine Valve Ball and stem. 
1— No. 4034 "A" Meter Valve Ball and stem. 
6 — Sets ^ Garlock Packing. 

The tools and service parts are packed in the steel kit de- 
scribed above. 



-one each for sizes AS-1, 



No. 40 Combined Pump and Softener Service Kit 

Includes all of the pump and softener tools and parts as included in the No. 30 and No. 35 kits, furnished in the stee 
kit shown above. 



34 



DURO SEPTIC TANKS PROMOTE HEALTH, CONVENIENCE COMFORT AND SAFETY 




DURO 

Septic Tanks 

Provide Safe, Sanitary 
Sewage Disposal Service 




Its Use — The Duro Septic Tank takes the place of the old- 
fashioned outhouse and the insanitary cesspool. It provides 
safe sewage disposal for homes lying outside, the reach of city 
sewers. 

Material— Duro Septic Tanks are made of twelve and four- 
teen gauge copperoid iron, thickly coated with rust-proof 
mineral enamel. 

Design — -The design follows the specifications as outlined by 
the U. S. Public Health Service, and State Health Depart- 
ments. 

Durability — The mineral-enamel is applied to the tank 
walls, making them double thick and indestructible. It 
protects the tank against rust and makes it impervious to 
moisture. 



Capacity — The chart below shows the capacities of the vari- 
ous sizes of Duro Septic Tanks, together with rating recom 
mendations. 

Sewage Disposal — The septic process eliminates the solids 
from sewage but it does not decrease the volume of sewage to 
be disposed of nor does it entirely remove organic life. Safe 
and adequate means for disposing of the septic treated liquid 
must be provided. Where the health restrictions prevent the 
use of streams or other natural outlets it is necessary to con- 
struct a filter bed or seepage pool. In providing either type, 
remember that approximately 200 gallons of liquid sewage 
must be disposed of from the ordinary home of five people — 
the same ratio applies to larger family groups. 




Filter Bed— Ground View 

Grade Branches 1 inch to 10 feet 

<7 & <7 
/y AossyV 

\V»r^VV \\Open\\ 

Filter Bed Materials Not Furnished 

Hub tile for main line, plain or hub tile for 
branches. 

20' per person for porous soil. If tight soil use 
30' to 40' each and lay in stone filled trench. 
Tar paper strips over top of open joints. 
Filter bed not to be over 12" to 18" under surface. 
Grade 1" to 10'. 



Horizontal Tanks 



' ) T hmSmS I 



A" Intake C Outlet 



1.3 



—Baffle. I &*tfle— - j 

Working 
D»ptH» _- 

4Q- 



Sludge Chcir.fctr 



No. 505 and larger tanks are 
furnished horizontal. 
See chart below for dimen- 
sions. 

On 510 and larger, 6" open- 
ings. Special openings on 
request. 

For systems larger than 
shown, write for prices, etc. 



No. 502 Vertical Section 

Intake Outlet 



n 



CO 



I 



j _ _w<** e i tlii^. _ |_ 



t 



40" 



jRaffle 

iPartit 



Sludge 

Chamber £[ flu 1 nt 
I Cbarn aer 



-38- 



ton 



The No. 502 and 503 Tanks are fur- 
nished vertical. 4" openings. 





Net 




-Rating No. of 


People 






Shipping 






No, 


Gallons 


Home 


School 


Factory 


Diameter 


Depth 


Wgt., lbs. 


502 


200 


6 


12 


10 


38" 


Depth 4 ft. 


295 


503 


300 


10 


20 


15 


47' 


Depth 4 ft. 


325 


505 


500 


20 


35 


30 


48" 


Length 6 ft. 


420 


510 


1000 


50 


65 


60 


60* 


Length 8 ft. 


950 


515 


1500 


75 


100 


90 


5 ft. 


Length 12 ft. 


1300 


520 


2000 


100 


130 


120 


5 ft. 


Length 16 ft. 


1650 


525 


2500 


125 


165 


150 


5 ft. 


Length 20 ft. 


2000 


530 


3000 


150 


200 


180 


5 ft. 


Length 24 ft. 


2350 


535 


3500 


175 


230 


210 


5 ft. 


Length 28 ft. 


2700 


540 


4000 


200 


260 


240 


5 ft. 


Length 32 ft. 


3050 



35 



DURO- YEARS OF UNINTERRUPTED SERVICE 



Shallow Well Pump Data 




FIGURE No. 1 

Figure No. 1 illustrates an ideal well installation. The pump and tank are in the basement, with the suction line running 
straight to the well pit and eliminating any up and down pipe lines, also any air pockets, and pipe elbows which cause noise and 
friction. 

In the pit, the well casing is extended above the floor to prevent anything from getting into it. A union is also shown, which 
allows the suction pipe to be withdrawn from the well. The suction pipe should be run about four feet below the ground line 
to make it frost proof — where it becomes cold enough that this is necessary. 




:;',k to/*? r 










— - — ~nz 








— 












. 


p 


.CIJTER.N _ 


% 









FIGURE No. 2 



FIGURE No. 3 



Figure No. 2 illustrates the usual cistern, lake or stream installation, everything being ideal, except the water flows to the 
pump under a small head, due to the water being higher than the pump. This sometimes causes noise, because the pump must 
on each stroke, stop the water flowing to it, which tends to produce a noise similar to closing a faucet quickly in the house. See 
Figure No. 3 for remedy. 

Whenever possible the pump should be placed higher than the water level of the cistern. 

Figure No. 3 shows a vacuum chamber made up of 134 pipe or greater and extending up at least 3 or 4 feet. 

The air in this chamber is gradually absorbed by the water and should be replenished when the system seems to be getting 
noisy. To do this, close throttle valve tight, remove cap on air chamber made of pipe, and the plug in the pump air chamber. 
When the water is all drained out, replace cap and plug so no leaks occur. Then open throttle valve when pump is running to a 
point that gives the best sounding condition. 

36 



DURO— GUARANTEED— PUMPS AND RESIDENCE WATER SYSTEMS 



DURO Pump Data 



HOW and WHEN fo Use Shallow Wnxs 

Use DEEP Wells when vertical Suction Depth is beyond 22 rr. Except in M Fqllowihg Conditions 



Condition He il - Correct 5mm Depth and Size 
of suctioh pipe correspmone with various suction 
Lengths. PuhpahdTjwkLwated at House 




I sr For the First wo ft or HorizontalSuction , 
Length A". and Zl ft. of VerticaiSu™ Depth B 
Use she Suction Pipe as Pump is tapped for . 

2nd For every additional 50 ft of Horizontal 
Suction A, Decrease Vertical Suction 
Depth'B' One Foot 

3rd if depth 6 cannot be decreased. suction 
Pipe Diameter must be Increased after the 
First ujqft, Okie Size Larger fur every 
2Q0FT. of Horizontal Length . 

SEE EXAMPLE ABOVE 



Condition No 2 - Suction DfcpfH GRtAffR than 
Bin Pump and Tank a1 Source op Supply. 



MAXirtUH VER11CAL HEIGHT DOSS NOt m® 7Q& 



f AHK A SWltCH PR^SSURes ^ 

For various hischarg£ heights 



VERTICAL HEIGHTS 


SWITCH SETAT 


70 FEET 


60 amd 75 LB. 


eo ■ 


55 - TO 


50 


50 - 65 


4-0 • 


4-5 60 




Condition No3 - suction Depth greater than^^I 
Pwpat source ofSupply and Tank at House . " 
Maximum Vertical height from pump to tahk does not 
exceed I30ei Pressure Released f rim tah* 



B 

7Df T 0R351BS. 
I MAX- MtAD 
PUMP TO BASEMENT 




AHOMIIN^l 



1ST, For the First 50 ft Length of Horizontal 
Discharge A* Use size Discharge Pipe as 
Pump is tapped for 

End. For every aqqitiohai 200ft Increase 
Discharge Pipe Dia. One Size. 

3m Motor must be Increased One Size. 



altitudes and practical suction lifts 




hoaoa ,_uia»l coiAf&Qo^xctcmm^ 

APPAUACHIAN MTS. .gAU FORlNIA . 

g*«T isji— Mipo^ »**t 4jtggg5ajft^ai 



The above illustrations disregard the matter of frost-proof pits, which should be considered where frost-proof installation* 
are necessary. The principles above, however, are applicable in all cases. 



Figure No. 4 Installation 




Sometimes you will find it necessary to run the suction line as shown 
above. When such is the case put an auxiliary vacuum chamber on the 
highest point to do away with a noisy pump. Air will collect at the 
highest point on a suction line and if there is not some method pro- 
vided to collect the air the pump may pound or hammer. By placing 
the vacuum chamber on the suction line as shown you will not be 
bothered with a noisy pump. 



Foundation Plan for Shallow 
Well Pumps 




. 4-90LTS ANCHORED 



LAG SCREW S HAN BE USED 1NSTEAP. 
Of B0LT3. 



The base of the pump should be set on a solid level place, 
concrete preferred. See Fig. 2, and Table below for founda- 
tion dimensions. 



Style Base Size Base A 



Remarks 



77-88 4x10^* 8" 15" 8" 9%" 3' 1" &x2%* Bolts 

250 7x14^' 11' 18" 8" 13" S%" V , &x2M" Bolts 

400 8x14^' 12' 18' 8' 13' 6%' V Ax2M' Bolts 

Drive™ 13Mx40H' 18' 44^' 9' 24' ll l A' l l A* Hx3* Bolts 

Drive^ 11MX24&* 16' 28' 9' 16*' 9H' Hj* Hx3' Bolts 



37 



DURO-GUARANTEED PUMP AND WATER SYSTEM ACCESSORIES 




Accessories 

No. 15 "DURO" Relief Valve 

"Duro" Pressure Relief Valves are especially suitable for use on closed Hot Water System? 
and Pneumatic Water Supply Systems as a protection against accident due to excessive pressure in 
the systems from any cause. They are designed to safeguard small Electric Pumping System* 
against overload in case the automatic pressure control fails to operate. 

"Duro" Relief Valves operate at a very close range of 10 pounds. In this particular they are 
not like other valves on the market which have a range of 50 or 60 pounds between the time they 
start to open until they are full open. This feature makes the "Duro" Valves especially valuable for 
the service intended. 

When ordering specify: No. 15-B— y 2 " Relief Valve. No. 15-A— 1" Relief Valve. 

"Duro" Relief Valves are made non-adjustable. They are all regularly set to open at 70 pounds 
although they can be made to operate at pressures from 35 to 100 pounds. 



No. 1701 Automatic Open Tank Float 

Switch 




The No. 1701 Automatic Float Switch is designed 
for use in operating pumps used for pumping water 
into open attic tanks or any elevated tanks. It is 
operated by means of a copper float which can be 
adjusted and is thoroughly reliable in every respect. 
Maximum variation in water level allowed for 30 
inches. 

Style No. 1701 — (specify pump it is for use with) 




Automatic Pressure 
Controller 



The "Duro" Automatic Pressure Controller illustrated above is designed especially 
for use with "Duro" Pumps. It is satisfactory for other service however, and where sold 
separately for other kinds of work it will be fitted up as shown in the cut. All controller* 
are double pole and set to operate between pressures of 25 to 40 lbs. 

Note — Order controller by number for pumps as listed below: 

No. 1602 Double Pole Controller for Pump No. 100. 

No. 1603 Double Pole Controller for Pumps Nos. 250 and 400. 

No. 1604 Double Pole Controller for Pumps Nos. 88, 900, 990, 3000, and 3200. 



Style 17 "DURO" Fresh Water Valve 

The "Duro" Fresh Water Valve here illustrated enables the user to get fresh, cool 
water direct from the well at all times for drinking and cooking purposes. The water 
does not enter the tank. 

This valve increases the value of a Pneumatic Water Supply System, as by its use 
it is possible to get from the system that one most delightful luxury, a cool drink of 
fresh sparkling water direct from the well. 

"Duro" Fresh Water Valves are made in three sizes: 

Style 17-A, Y 2 " See Parts Price Sheet 

Style 17-B, %" See Parts Price Sheet 

Style 17-C, 1 \__ See Parts Price Sheet 

Note — Under no circumstance should a check valve be substituted for a Fresh Water Valve. 

38 




COUPLINGS AND GUIDES, PRESSURE INDICATORS AND FOOT VALVES 



Pump and Tank Accessories 





Patent 
Applied For 



Special Couplings 
and Guides 

For 990-3200 Pumps 

Sucker Rod Clamp Guides 

Size Pumps Used On 

W^H" 991-992-3201-3202-3203 

M"x3 * 993-3204-3205 

1 "x3 * 3206 

1 x3H" 3207-3208 

lJi*x4 w 3209 

l^fx4K* 3210 

Sucker Rod Guide Couplings 

%"x2 y 2 * 991-992-3201-3202-3203 

3^"x3 " 993-3204-3205 

1 "x3 " 3206 

1 "x3j/£ tf 3207-3208 

l}i*x4 n 3209 

IK***W 3210 

"Duro" Clamp guides and guide couplings 
prevent buckling of sucker rods. Also, they 
eliminate the necessity of cutting and re- 
threading sucker rods in short lengths, as 
full length sucker rods may be used with 
clamp guides. This is a Duro patented 
feature. 



Gauges for Tanks 

This" DURO" Combination Pres 
sure and Water Indicator is furnished 
as standard equipment on all Duro 
Water Systems. A l^£ v pipe- 
thread connection screws into tank. 
It is very similar in appearance and 
operation to the gauges as furnished 
on the dashboard of an automobile. 
It registers the pressure in the 
tank automatically, and also it in- 
dicates the proportion of air and 
water in the tank. 

When the indicator points to 
'Admit more Air" it is necessary 
to remove the air valve cap until 
the air again reaches the proper pro- 
portion. This eliminates the old 
Combination or Pressure Gauge 
and Water Glass. It is much neater 
and more compact and prevents 
breakage of water glass and fittings 
due to handling or accident, etc. 

New Style Combination Water and Pressure Indicator — See 
Price Sheet. 

Old Style Combination Water and Pressure Gauge — See 
Price Sheet. 

Old Style Water Gauge only — See Price Sheet. 

Old Style Pressure Gauge only— See Price Sheet. 




New Style Water and 
Pressure Indicator 



DURO Foot Valve and Strainer Combination 

The DURO positive Foot Valve and Strainer Combination is used in connection with Shallow Well 
Pumps on the end of the suction line, especially where the suction line is long, and where it is likely to 
have a leak, or where the suction lift is extreme. 

In cases such as the above where the DURO Foot Valve and Strainer Combina- 
tion is used, the suction valves in the pump are relieved of the burden of holding a 
high suction head. By taking this load off of the valves the pump will operate more 
satisfactorily, and the valves will last longer. 

In case of the long suction line where little leaks are likely to develop in the 
line, the DURO FOOT VALVE will prevent the water from returning to the well. 

The DURO Foot Valve has been successfully used on installations for many 
years, and has proved very satisfactory. A brass poppet, faced with a high-grade 
rubber disc, makes a perfect seating in the brass seat and an air tight joint. 

The poppet guides and stops in the upper casting are so constructed that the 
seating of the poppet is positive, preventing it from seating improperly. There is 
ample water-way passage so that no friction is caused. 

The strainer is of perforated sheet brass with holes of such size as to prevent 
Duro Foot Valve most injurious particles from getting into the suction line. The bottom of the strainer 

and Strainer i s closed. 




The DURO Foot Valve and Strainer Combination is furnished in %"—\"—\ ]4" and lH" sizes— 5^" 
long, except the l£4* s * ze > which is 6" long. For prices see price sheet. 

39 



DURO AUTOMATIC PUMPS OBSOLETE HAND OPERATED PUMPS 



Amperes for Various Motors and 
Correct Size of Fuses 



















Volts A. 


C. with Fuse 


Size 






Volts D. C. 


with Fuse 








Repulsion 


-Induction Only 




32 V. 


Fuse 


110 V. 


Fuse 


220 V. 


Fuse 


110 V. 


Fuse 


220 V. 


Fuse 


Motor 


Amp. 


Amp. 


Amp. 


Amp. 


Amp. 


Amp. 


Amp. 


Amp. 


Amp. 


Amp. 


Vs 


3 


3 


1 


1 


.5 


3 


3 


3 


1.5 


3 


1/6 


4 


6 


1 


3 


.5 


3 


4 


6 


2 


3 


H 


6 


6 


2 


3 


1 


3 


4.5 


6 


2.25 


3 


H 


8 


10 


2.5 


3 


1.25 


3 


6.5 


10 


3.25 


6 


H 


12 


12 


3.5 


6 


1.75 


3 


8 


10 


4 


6 


% 


17.5 


20 


5 


6 


2.5 


3 


9.5 


10 


4.75 


6 


i 


23 


25 


7 


10 


3.5 


6 


14 


15 


7 


10 


m 


35 


40 


10 


10 


5 


6 


20 


20 


10 


10 


2 


46 


50 


14 


15 


7 


10 


25 


25 


12.5 


15 


3 


69 


70 


20 


20 


10 


10 


40 


40 


20 


20 



Whenever you have a special problem on which you would like advice or suggestions, write to the 
factory, or, if it is necessary to have a Duro expert on the job, write to your nearest Duro representative or 
salesman. He will be glad to cooperate with you. 

Examples: 



jH. 



P. Motor, A. 
P. Motor, A. 



C, 110 Volts. 
C, 110 Volts. 



Correct fuse 3 Amps. 
Correct fuse 4.5 Amps. 



Use 6 Amp. Fuse. 



The correct amperes will be found on the name plate of each motor. 

Caution — Do not overfuse the motor. By doing so the motor might burn out before the fuse will blow. 
Never use a 15 or 30 amp. fuse where the motor only requires a 3 amp. fuse. 



Correct 



1 Amp. 

2 Amp. 

3 Amp. 

4 Amp. 

5 Amp. 

6 Amp. 

7 Amp. 

8 Amp. 

9 Amp. 

10 Amp. 

11 Amp. 

12 Amp. 

13 Amp. 

14 Amp. 
16 Amp. 
18 Amp. 
20 Amp. 
22 Amp. 
24 Amp. 
26 Amp. 
28 Amp. 
30 Amp. 
32 Amp. 
34 Amp. 
36 Amp. 
38 Amp. 
40 Amp. 



100 



14 

14 

14 

14 

14 

14 

14 

14 

14 

14 

14 

14 

14 

14 

12 

12 

12 

10 

10 

10 

8 

8 

8 

8 

6 

6 

6 



Size for 10- Volt Drop 

FOR 100 VOLTS OR GREATER 
Distance in Feet from Motor to Meter 



200 



300 



400 



500 



600 



750 



14 

14 

14 

14 

14 

14 

14 

14 

14 

14 

12 

12 

12 

10 

10 

10 

10 

8 

8 

8 

8 

8 

6 

6 

6 

6 

6 



14 

14 

14 

14 

14 

14 

12 

12 

12 

12 

10 

10 

10 

10 

10 

8 

8 

8 

8 

8 

6 

6 

6 

6 

6 

6 

6 



14 

14 

14 

14 

14 

12 

12 

12 

10 

10 

10 

10 

8 

8 

8 

8 

8 

6 

6 

6 

6 

6 

4 

4 

4 

4 

4 



14 

14 

14 

14 

12 

12 

10 

10 

10 

8 

8 

8 

8 

8 

8 

6 

6 

6 

4 

4 

4 

4 

4 

4 

4 

4 

2 



14 

14 

14 

12 

12 

10 

10 

10 

8 

8 

8 

8 

8 

6 

6 

6 

6 

4 

4 

4 

4 

4 

4 

2 

2 

2 

2 



14 
14 
14 
12 
10 
10 
8 
8 
8 
8 
6 
6 
6 
6 
6 
4 
4 
4 
4 
2 
2 
2 
2 
2 
2 
2 
2 



1000 



14 
14 
12 
10 
10 
8 
8 
8 
6 
6 
6 
6 
4 
4 
4 
4 
4 
2 
2 
2 
2 
2 



1250 



14 
14 
12 
10 
8 
8 
6 
6 
6 
4 
4 
4 
4 
4 
4 
2 
2 
2 
2 
2 
1 
1 




00 



1500 



14 

12 

10 

8 

8 

6 

6 

6 

4 

4 

4 

4 

4 

2 

2 

2 

2 

1 

1 

1 







00 

00 

00 

00 



1750 



14 
12 

10 
8 
6 
6 
6 
4 
4 
4 
4 
2 
2 
2 
2 
2 
1 
1 



00 
00 
00 
00 



2000 



14 
12 
10 

8 
6 
6 
4 
4 
4 
4 
2 
2 
2 
2 
2 
1 
1 



00 
00 



2500 



12 
10 
8 
6 
6 
4 
4 
4 
2 
2 
2 
2 
2 
1 
1 


00 
00 



Note— For the correct size wire, consult the above Table of Amperes for Various Motors. The first column under any voltage 
will give the necessary amperes required for the particular size motor being used. After obtaining the correct amperes required, 
consult the lower table in the ampere column, the number under the approximate distance in feet from the motor to the meter. 



40 



LEARN HOW TO USE THESE IMPORTANT TABLES FOR DURO SYSTEMS 



Friction Head or Loss and Comparative 
Discharging Power of Pipes 



Discharge depends not only upon 
size of pipe but upon velocity 
of flow, a factor that changes with 
the relation of head of water to 
length of pipe. Inspection shows 
that doubling the diameter of a 
pipe increases the discharging power 
or capacity about 6 times. 

A column of water 1 foot high 
and having a base equal in area 
to 1 square inch weighs about 
A of a pound, and of course, 
presses that amount on the base. 
Double the height, and obviously 
both the weight and the pressure 
are doubled. Hence it may be 
taken for granted that the pressure 
of water at rest (static pressure or 
head) is in direct proportion to the 
vertical height or depth of the 
water. 

Friction loss should not be 
greater than given in the following 
table: 
2 lbs. per 100 ft. for 500 ft. or less 

of pipe. 
1 lb. per 100 ft. from 500 to 1000 

ft. of pipe. 
Y 2 lb. per 100 ft. from 1000 to 2000 
ft. of pipe. 



•c».£ 


DIAMETER OF PIPE IN INCHES 




H Vs l A % 1 1H l l A 2 2V 2 3 4 5 6 


Friction loss in feet for each 100 feet length of pipe. To reduce to pounds, divide by 2 



0.5 


7 


8 




































1 


28 





6 


4 


2 


1 




























2 


103 





23 


3 


7 


4 


1 


9 
























3 






49 





15 
27 


8 



4 
7 


1 



1 
2 


26 
14 


"6 


57 


0.26 














4 








5 










41 





10 


5 


3 


25 




84 


.40 














6 














14 


7 


4 


55 


i 


20 


.56 


0.20 












8 














25 





7 


8 


2 


03 


.95 


.33 


0.11 













10 














38 





11 


7 


3 


05 


1.43 


.50 


.17 













12 


















16 


4 


4 


3 


2.01 


.70 


.24 














14 


















22 





5 


7 


2.68 


.94 


.32 














16 


















28 





7 


3 


3.41 


1.20 


.41 













18 






















9 


1 


4.24 


1.49 


.50 













20 






















11 


1 


5.2 


1.82 


.61 


0.25 










25 






















16 


6 


7.8 


2.73 


.92 


.38 


6.09 








30 






















23 


5 


11.0 


3.84 


1.29 


.54 


.13 








35 


























14.7 


5.1 


1.72 


.71 


.17 








40 


























18.8 


6.6 


2.20 


.91 


.22 








45 


























23.2 


8.2 


2.76 


1.15 


.28 


__ 





50 




























9.9 


3.32 


1.38 


.34 


0.11 




60 




























13.9 


4.65 


1.92 


.47 


.16 





70 




























18.4 


6.2 


2.57 


.63 


.21 





80 




























23.7 


7.9 


3.28 


.81 


.27 





90 






























9.8 


4.08 


1.00 


.34 





100 






























12.0 


4.96 


1.22 


.41 





120 






























16.8 


7.0 


1.71 


.58 


0.24 


140 






























22.3 


9.2 


2.28 


.76 


.32 


160 
































11.8 


2.91 


.98 


.40 


180 
































14.8 


3.61 


1.22 


.50 


200 
































17.8 


4.4 


1.48 


.61 


240 
































25.1 


6.2 


2.08 


.86 



Example 



Eight gallons per minute (480 gallons per hour) through a 100 ft. length of 1" pipe shows 7.8 feet of friction loss. This divided 
by 2 equals 3.9 pounds. As 2 pounds is the limit of friction permissible per 100 ft. a larger pipe should be used. 

Tank Discharge Between Pressures 

The accompanying curves can be used to determine the amount of 
water discharged between various tank pressures for any size of Duro 
pressure tank. 

Initial conditions, however, should be approximately true. The water 
level in all cases should be J^ the tank height. For instance, in using the 
40 lbs. curve, the tank should be one-half full of air when the tank pressure 
is 40 lbs. 

Example: With a 30 gallon tank, what is the discharge in gallons, 
between tank pressures of 40 lbs. and 25 lbs., when at 40 lbs. water level is 
approximately one-half tank height? 

See 40-lb. curve, and, at point where the 25 lbs. line crosses the curve 
read 19.0% below. With a 30 gallon tank, for example, discharge in gal- 
lons can be found as follows: 



= 19.0% X 30 = 5.7 gallons discharged between 40 lbs. and 25 lbs. 

With a 120 gallon tank, the discharge would be 
= 19.0% X 120 = 23.0 gallons, etc. 

Note — Duro Pressure Tanks are furnished standard for one-half air and 
one-half water, to insure more discharge capacity with smaller tanks. 
When figuring competitively with other makes using }4 air and % water, 
0~5 i'o is'l'o 25 SO is 40 45 50 35 £0 65 70 ^o not overlook the fact that a Duro Tank has greater discharge in gal- 
D I SCHARGE IN PER CENT OF TANK long between pressure s, which is a distinct sales advantage. 

41 




DURO-GUARANTEED TANKS AND PUMP ACCESSORIES 



DURO "Super-Tested" Tanks 

[Bare Tanks Only] 

Duro "Super-tested'* tanks are supplied either black or galvanized. When ordering be sure to specify 
which you desire. 

Duro manufacturers its own tanks and, therefore, is able to build a superior product at a consistently 
low price. 



Size No. 



Capacity 



Remarks 



A 


40 


B 


80 


C 


120 


D 


220 


F 


315 


H 


525 


K 


1000 



Be sure to specify whether black or galvanized. 

For prices, see Price Sheet. 

Upon application, we will be glad to quote prices on larger 

sized tanks. 
The 1000 gallon tanks are furnished 48 in. diameter by 10 

ft. long. 
For prices on 42 in. x 14 ft., 1000 gallon tanks, write factory. 



How To Order— If bare tank only is wanted, order by letter, such as: "One (1) Style "A" 40 gallon 
galvanized (or black) tank." If fittings and gauges are wanted with tank, order as follows: "One (1) 

Style " A" 40 gallon galvanized (or black) tank, with fittings and gauges for No. System." In 

ordering be sure tank will go through basement opening. 

Note — Tanks of 525 gallon capacity furnished Horizontal unless otherwise specified. Tanks 315 gallon 
capacity and smaller furnished Vertical unless ordered otherwise. 




Frost -Proof Set Length 



DURO Frost-Proof Set-Length 

[Patented] 

Deep Well pumps must be placed directly over the well, and unless 
the pump is put in a frost-proof pit it is necessary to use the "DURO" 
Patented Frost-proof Set-Length to prevent freezing. 

The "Duro" Frost-proof Set-Length is provided so that the deep well 
power head can be set on top of the ground and the discharge connections 
taken from below the frost line. 

You will note from the illustration that the air pump is placed on the 
Frost-proof Set-length. This is done to eliminate an air tube connection 
from the air pump to the discharge line, This is an exclusive "Duro" 
Patented feature. If the air pump was placed on the power head on the 
surface of the ground there would be an air tube required running from the 
air pump to the discharge line in the Frost-Proof Set-Length. This air 
tube would become filled with water and in cold weather freeze, defeating 
the purpose of a Frost -proof Set -Length. The Duro therefore is a very 
decided improvement. 

Regular length of the "Duro" Frost-proof Set-Length is 4 feet. How- 
ever, it can be furnished any length desired. A charge is made for each 
additional foot over 4 feet. 

"Duro" Frost-proof Set-Lengths are made for No. 900, 990, 3000 and 
3200 Deep Well Pumps. For prices see price sheet. 

42 



DURO DEEP WELL PUM PS — STANDARD OF THE WORLD 



Single and Double- Acting Cylinders 




UP STROKE 



DOWN STROKE 



Double-Acting 
Cylinder 

Patent Applied For 

On The Up Stroke 

water enters lower screen, and 
through lower suction valve 
(which is wedged into the cylin- 
der in the same way as a single- 
action cylinder) and into lower 
cylinder chamber. At the same 
time the water in the upper cyl- 
inder chamber is forced upward 
through the upper cylinder dis- 
charge valve and into the drop 
pipe. 

Oil The Down Stroke 

water enters the upper screen 
and fills the upper cylinder 
chamber and at the same time 
water in the lower cylinder 
chamber is forced up through 
the tobin bronze piston rod 
(which is a tube) and out the 
lower cylinder discharge valve 
into the drop pipe. 




This shows the usual method of 

mounting a Deep Well Pump on 

foundation, and the arrangement of 
well casing and drop pipe. 



^ SUCKER HDD 

CONNECTION TOR 
^ DROP P \PZ 



Single-Acting Cylinders 

To the right is shown detailed diagram of the Duro Single Acting Deep Well 
Cylinder. The lower cylinder cap will be tapped upon request when it is desired 
to use a suction screen. 



On the up stroke of the pump water 
is drawn into the Chamber "A" through 
the suction v lve at the same time 
water above the plunger is being dis- 
charged. 



On the down stroke the suction valve 
is closed and the water in the Chamber 
"A" is forced through the plunger 
valve into the drop pipe. 




Deep Well Pump Foundation Plans — ^& CyUl 




Pump 



B 



D 



900 

990 

3000 

3200 



17" 
17" 
20" 
20" 



14M" 

HM ff 



n" 

6" 
12" 

6" 



4H" 
6" 
6" 



Hi' 

IK' 



3^" above Foundation 

ir 

14" above Foundation 



43 



DURO-A GOOD INSTALLATION PRACTICALLY ELIMINATES SERVICE 



Deep Well Pump Data 














Plan No. 1 

Installed in an extension of the house foundation, with a 
manhole, over center of pump, for withdrawing sucker rod or 
drop pipe. The tank in this case is shown in basement. 
This installation is a very desirable one. 



Plan No. % 

Plan No. 2 is similar to Plan No. 1 with the exception of 
the tank arrangement. Here the tank is buried in the ground 
and has the advantage of keeping the water cool. The tank, 
however, should be thoroughly painted to keep from corrod- 
ing. 







Plan No. 3 

Similar to Nos. 1 and 2, except that the well is not located 
within the house foundation, due to different conditions, and 
is probably some distance from the house. 




Plan No. S 

In this case an extension to the pump is made so the dis- 
charge pipe can be taken off below the frost line, so the pump 
is protected against freezing. Note use of frost-proof set-length. 



Water-Proof Pit Construction 



In order to make pits as nearly water-proof as possible, and 
to prevent seepage, we recommend the following method of 
construction: 

1. Excavate 2 feet wider and longer than outside dimen- 
sions of pit. 

2. Pour about three inches of concrete on complete 
bottom. 

3. Coat top of bottom with tar thoroughly. 



4. Set wall forms. 

5. Pour Walls. Setting in any pipe first. 

6. Coat outside of walls with tar thoroughly. 

7. Pour 3 inches of concrete over tar on inside for floor, 

8. Fill in dirt around walls. 

9. Note drawing above. Tar makes a joint at bottom of 
walls and around well casing or any other pipe that goes 
through the walls. 



44 



DURO— GUAR ANTEED— PUMPS AND RESIDENCE WATER SYSTEMS 



Outstanding Achievements To Be 
Found Only In "World Famous" 
Duro Deep Well Pumps 



They Have Made DURO Deep Well 

Pumps and Systems "The 

Standard of the World" 

Lubrication — Perfect lubrication of the "piston type" cross- 
head is a Patented and exclusive Duro feature. Porous plugs in 
the cylindrical crosshead permit an even automatic oil flow. This 
feature is fool-proof and eliminates the possibility of excess lu- 
brication. 

Oiling — Each of the bearings (including the connecting rod) 
has its own oil reservoir with wool waste circulating system. 
This is an exclusive Duro feature eliminating troublesome grease 
cups with loss of lubrication through grease squeezing out. It 
eliminates manual lubrication as there are no grease cups. 

Crank Shaft — The Duro one-piece, high-carbon, drop-forged 
ground steel crankshaft is of the center-throw type hung on two 
phosphor bronze bearings, insuring higher efficiency. 

Frost- Proof — Another patented Duro feature is the frost- proof 
set-length. The power head may be installed on ground surface 
and the pump unit lowered below frost level. The feature which 
prevents freezing is that the air pump is lowered below the frost 
line, also eliminating the old trouble with so-called frost-proof 
set-lengths where water backs into air tube and freezes. No 
other set-length is strictly frost-proof. This eliminates driving 
arm breakage, common in other pumps. The Duro Air Pump 
will pump either air or water. 

Differential — The Duro differential eliminates the necessity 
of the stuffing box. This principle results in an even motor load 
and an even flow of water, as it pumps on both up and down 
strokes. That's why Duro Deep Well Pumps are so quiet and 
efficient. 

Installation — Duro Deep Well Pumps are easy to install. 
Here are the operations: 

First — Hooking base to drop pipe. 

Second — Hooking discharge line to base. 

Third — Setting differential. 

Fourth — Placing pump head on base and connecting sucker 
rod, and then bolting head to base with four bolts. 

Note that the heavy load is placed on base last. 

Compactness — Duro Deep Well Pumps require very little room. 
They are easily gotten at from all sides. The motor is up high 
and away from all possible dampness. The square base permits 
setting pump head in any direction. 

Completeness — Duro Deep Well Pumps are shipped complete 
with relief valve, check valve, air chamber assembled ready to 
install. Motor connections to switch are made at factory. 

Chain Drive — The chain drive is standard on Duro Deep Well 
Pumps. There are no worm gears to reduce efficiency. 

Adjustable — The connecting rod phosphor bronze bearings 
are adjustable. 

Quiet — Duro construction eliminates noise. The plunger 
leathers are especially treated for long life and to minimize 
friction, thus preventing overload. 

Safe — The pump mechanism is totally enclosed in one rigid 
casting, fully protected and guarded. 

"When Better Deep Well Pumps Are 
Made DURO Will Make Them" 




Cross-section view show- 
ing detail of achieve- 
ments described herein 



45 



DURO — GUARANTEED - PUMPS AND RESIDENCE WATER SYSTEMS 




USE 
1/2 BOLTS 



Made in 18 sizes. Shipping Weight 260 
pounds. Standard operating pressures. 25 
to 40 pounds. Overall dimensions, 16x16 
*36" high. 



No. 900 Deep Well 

Pump 

Its Use 

Style 900 Pumps furnish city water service to suburban and 
country homes where electric current is available. They are 
suitable for wells when the depth to the water level range* 
between 22 feet and 325 feet below the surface of the ground. 
See "Guide to the Selection of a Water System," for further 
information. 

Method of Installation 

It is recommended that "DURO" Deep Well Pumps be 
installed in frost-proof pump pits, with wooden tops. The 
correct size being about 4x4 feet, 5 to 8 feet deep, depending 
upon the geographical location. Full directions accompany 
each outfit. Ask for Deep Well Installation and Instruction 
Book. 

Special Frost-Proof Outfits 

"DURO" Deep Well Pumps can be equipped with a Frost- 
proof Set-Length so the Power Head can be set on top of the 
ground in a pump house, and the discharge connection taken 
from below the frost line. This Set-Length is extra. See 
accessories. 

Special Features and Construction 

Elsewhere may be found details of patented, exclusive fea- 
tures and superiorities of quality, construction and work- 
manship. 



Specifications of No. 900 Deep Well Pumps 

(With either Alternating or Direct Current Motors.) 
Pumps With Open Type Well Cylinders 





Cap. 


Smallest 


Vertical 




Size of 


Size of 


Kind and 


Inside 


Size 


Size 


per 


Dia. Well 


Depth 


Size 


Open 


Closed 


Size of 


Diameter 


Disch 


No. 


Hour 


Cas. Cyl. 


to 


of 


Type 


Type 


Sucker 


Drop 


Pipe for 




Gals. 


Will Fit 


Water 


Motor 


Cylinder 


Cylinder 


Rod 


Pipe 


1st 100' 


902 


100 


3 * 


50' 


H HP 


1 13/' 
1 16 




134" Wood 


2 " 


w 


931 


170 


3 ' 


80' 


H HP 


1 13 " 
1 16 




134" Wood 


2 " 


%' 


941 


165 


3 " 


160' 


y 2 hp 


1 !-3 " 
1 16 




IH' Wood 


2 " 


%' 


942 


130 


3 " 


300' 


H HP 


iM" 




\W Wood 


2 * 


%* 


950 


225 


334" 


40' 


34 HP 


2K" 




134" Wood 


2y 2 » 


1 * 


961 


280 


3^" 


80' 


y 2 hp 


2M" 




134" Wood 


2y 2 * 


1 * 


963 


275 


334" 


160' 


U HP 


214* 




\y%" Wood 


234" 


1 * 


971 


325 


4M" 


35' 


HHP 


2%" 




ty%* Wood 


3 " 


1 * 


973 


400 


4^" 


55' 


% HP 


2K" 





l%" Wood 


3 • 


1 If 






Pumps With Closed Type Well Cylinders 






905 


100 


2 ' 


50' 


MHP 





1 1 3 » 

1 16 


Vs" Pipe 


1 ' 


w 


912 


170 


2 * 


80' 


34 HP 




1 13 " 
1 16 


W Pipe 


1 ' 


W 


921 


165 


2 ' 


160' 


y 2 hp 





1 kA » 
1 16 


W Pipe 


1 ' 


%" 


922 


130 


2 * 


300' 


H HP 





Il8» 
1 16 


H w Pipe 


1 ' 


K" 


952 


225 


W 


40' 


H HP 




m" 


134" Wood 


iH' 


1 ' 


984 


280 


2V 2 ,f 


80' 


y 2 hp 




2H" 


IH' Wood 


134" 


1 ' 


985 


275 


234" 


160' 


% HP 




2H" 


134" Wood 


134" 


1 r 


983 


325 


3 ■ 


35' 


y 2 hp 




1%' 


134" Wood 


2 ' 


1 " 


986 


400 


3 ' 


55' 


% HP 


— 


2H" 


134" Wood 


2 v 


1 r 



Note — See price sheet for odd cycle A. C. Motors. Sucker Rod and Drop Pipe Extra. 

Note — Eureka cylinders of same diameter and capacity can be furnished to enter casings the same diameter as for the closed 
type cylinders. 

46 



DURO — GUARANTEED — PUMPS AND RESIDENCE WATE R SYSTEMS 

No. 900 Deep Well System 




Its Use 



Style 900 "DURO" Automatic Electric Deep Well Systems 'were de- 
signed especially for use in the average size suburban or country home for 
supplying water for all general purposes from wells where the depth to 
water level ranges from 22 to 325 feet. In selecting a "DURO" system, 
see "Guide to the Selection of a Water System." 



Arrangement 



"DURO" Deep Well Systems are arranged in the most convenient 
way possible. The connections between the Automatic Switch, Air Com- 
pressor and Motor are all made or provided for, and every part of the 
entire system is easily accessible, and every detail taken care of from a 
convenience standpoint. The automatic switch is set to start the pump 
at 25 pounds and stop at 40 pounds. For open tank use "DURO" Float 
Switch No. 1701, shown on accessory page. 



Complete System Includes 



1— No. 900 "DURO" Automatic Deep Well Pump 

complete with single-acting cylinder. 
1— "DURO" Heavy Gauge Pressure Tank. 
1 — Combined Water and Pressure Indicator. 
1— "DURO" Relief Valve. 
1— High Grade Gate Valve. 

Note — Drop Pipe and Sucker Rod are extra. 
Price Sheet. 



See 



This illustrates the 900 System which includes 
§00 Style Pump shown on opposite page, and 
Tank and Accessories listed below. 



How to Order Systems 

Important — In ordering Complete Systems it is first necessary to select 
size Deep Well Pump wanted as listed on opposite page and then the size 
tank listed below, either Black or Galvanized. Then order by number 
such as No. 930 pump with C-9 (galvanized or black) tank or No. 910 pump 
with C-9 (galvanized or black) tank, for example. If Direct Current, what 
voltage? If Alternating Current, what voltage, cycles and phase? Also, 
specify the depth to lowest water level, and diameter of well casing. 



Tanks and Accessories for No. 900 Deep Well Pumps 

(Includes Combination Water and Pressure Gauge and Gate Valve) 



Size of 


Capacity 


Tank Dimen- 


Overall Dimen- 


Shipping 


Tank and 


of 


sions, Inches, 


sions, Inches, 


Weight of 


Accessories 


Tank 


Dia.-Ht. 


Wth.-Dth.-Ht. 


Tank 


A-9 


42 gals. 


16x48 


22x38x52 


115 lbs. 


B-9 


80 gals. 


20x60 


22x42x64 


165 lbs. 


C-9 


120 gals. 


24x60 


30x46x64 


215 lbs. 


D-9 


220 gals. 


30x72 


36x52x76 


415 lbs. 


B-9 


315 gals. 


36x72 


42x58x76 


490 lbs. 


H-9 


525 gals. 


36xl20(Horz.) 


120x58x40 


790 lbs. 



All tanks 72 inches or less in length are furnished vertical unless otherwise ordered. Tanks over 72 inches 
in length are furnished horizontal. Specify whether black or galvanized. Larger sized tanks quoted upon 
application. 

Operating Costs 

10c per 1000 gallons with current at 10c per Kw. hour, which is less than the average cost of city water. 
Fresh Drinking Water—See Fresh Water Valves, on accessory pages. 

47 



DURO — GUARANTEED— PUMPS AND RESIDENCE WATER SYSTEMS 




„ USE 
VZ BOLTS 



Made in sixteen sizes. Shipping weight 

approximately 500 lbs. 

Operating Pressures, 25 to 40 lbs. Over All 

Dimensions of Pumps, 19 x 19 x 50" High. 



3000 Deep Well Pump 

Its Use 

No. 3000 Deep Well Pumps furnish an abundance of fresh, 
running water under strong pressure, to farms, suburban 
homes, country estates, large buildings, country clubs, schools 
and institutions where a large amount of water is required. 
They are for wells ranging in depth from 22 feet to 500 feet 
below the surface of the ground. 

Pump capacities range from 233 gallons of water per hour 
at 500-foot depth to 1143 gallons at 35-foot depth. 

Method of Installation 

It is recommended that "DURO" Deep Well Pumps be 
installed in frost-proof pump pits, with wooden tops, the 
correct size being about 6 x 6 ft., 5 to 8 feet deep, depending 
upon the geographical location. 

Special Frost-Proof Outfits 

"DURO" Deep Well Pumps can be equipped with a Frost- 
proof Set -Length so the Power Head can be set on top of the 
ground in a pump house, and the discharge connection taken 
from below the frost line. This Set-Length is extra. See 
page on accessories. 

Special Features and Construction 

Elsewhere may be found details of patented, exclusive 
features; and superiorities of quality, construction, and 
workmanship. 

Note — See price sheet for odd cycle A. C. Motors. Sucker 
rod and drop pipe extra. 



Specifications of No. 3000 Deep Well Pumps 

(With Alternating Current Motors.) 
Pumps With Open Type Well Cylinders 





Cap. 


Smallest 


Vertical 




Size of 


Size of 


Kind and 


Inside 


Size 


Size 


per 


Dia. Well 


Depth 


Size 


Open 


Closed 


Size of 


Diameter 


Disch. 


No. 


Hour 


Cas. Cyl. 


to 


of 


Type 


Type 


Sucker 


Drop 


Pipe for 




Gals. 


Will Fit 


Water 


Motor 


Cylinder 


Cylinder 


Rod 


Pipe 


1st 100' 



3005 


233 


3 " 


300' 


1 HP 


IW 




lH* Wood 


2 " 


1 " 


3010 


233 


3 * 


500' 


l^HP 


ifff 




lVs" Wood 


2 " 


1 " 


3015 


350 


w* 


150' 


1 HP 


2H" 





\% v Wood 


23^" 


1 ■ 


3020 


350 


3V2" 


275' 


lJ^HP 


2^" 





1%' Wood 


2y 2 " 


w 


3025 


525 


*K' 


75' 


1 HP 


m tf 




l%* Wood 


3 * 


1U' 


3030 


525 


4M" 


125' 


lJ^HP 


2%» 





\Y%* Wood 


3 " 


iJT 


3035 


735 


W 


40' 


1 HP 


3X" 





\y % " Wood 


3H" 


m* 


3040 


735 


4J£* 


75' 


l^HP 


3M" 





1J4' Wood 


3^" 


m* 


3045 


980 


m* 


40' 


lJ^HP 


3H» 





1%* Wood 


4 ' 


IW 








Pumps With Closed Type 


Well Cylinders 






3060 


525 


3 " 


75' 


1 HP 





2%' 


IW Wood 


2 ' 


W 


3065 


525 


3 " 


125' 


lJ^HP 





2%" 


\y%* Wood 


2 " 


iK" 


3070 


642 


m* 


50' 


1 HP 




3 " 


\y % * Wood 


2 " 


\w 


3075 


642 


3K 2 " 


100' 


l^HP 





3 " 


\y % * wood 


2 " 


W 


3080 


873 


4 " 


35' 


1 HP 




W 


1%" Wood 


23^2* 


w 


3085 


873 


4 " 


65' 


lJ^HP 





W 


\y % * Wood 


Wi" 


lM ff 


3090 


1143 


4H" 


35' 


l^HP 





4 » 


\W Wood 


3 ■ 


\W 



48 



DURO — GUARANTEED — PUMPS AND RESIDENCE WATER SYSTEMS 



Style 3000 Deep Well System 




This illustrates the 3000 System 
which includes 3000 Style Pump 
shown on opposite page, and Tank and 
Accessories listed below. 



Its Use 

Style No. 3000 "DURO" Automatic Electric Deep Well 
Systems are for the larger suburban or farm homes where 
large quantities of water are desired for watering stock, sprink- 
ling, etc. They will pump water from deep wells where the 
depth to water level ranges from 22 to 500 feet. 

In selecting a "DURO" system, see "Guide to the Selection 
of a Water System." 

Arrangement 

"DURO" Deep Well Systems are arranged in the most 
convenient way possible. The connections between the 
Automatic Switch, Air Compressor and Motor are all made 
or provided for and every part of the entire system is easily 
accessible, and every detail taken care of from a convenience 
standpoint. The automatic switch is set to start the pump at 
25 pounds and stop at 40 pounds. 



Complete System Includes 

1— No. 3000 "DURO" Automatic Deep Well Pump 

complete with single-acting cylinder. 
1— "DURO" Heavy Gauge Pressure Tank. 
1 — Combined Water and Pressure Indicator. 
1 — Duro Relief Valve 
1— High Grade Gate Valve. 
Note — Drop Pipe and Sucker Rod are extra. See 

Price List. 



How To Order Systems 

Important — In ordering Complete Systems it is first 
necessary to select size Deep Well Pump wanted as listed on 
opposite page, and then the size tank listed below, either 
Black or Galvanized. Then order by number such as No. 3020 
pump with D-3 (galvanized or black) tank or, 3025 pump with 
E-3 (galvanized or black) tank, for example. If Direct Cur- 
rent, what voltage? If Alternating Current, what voltage, 
cycles and phase? Also specify the depth to lowest water 
level, and diameter of well casing. 

Cost of Operation 

10c per 1000 gallons with current at 10c per Kw. hour, which 
is less than the average cost of city water. 



Tanks and Accessories for No. 3000 Deep Well Pumps 

Includes Combination Water and Pressure Gauge and Gate Valve. 



Size of 


Capacity 


Tank Dimen- 


Overall Dimen- 


Shipping 


Tank and 


of 


sions, Inches, 


sions, Inches, 


Wt., comp. 


Accessories 


Tank 


Dia.-Ht. 


Wth.-Dth.-Ht. 


System 


C-3 


120 gals. 


24x60 


30x50x64 


700 lbs. 


D-3 


220 gals. 


30x72 


36x56x76 


900 lbs. 


E-3 


315 gals. 


36x72 


42x62x76 


1000 lbs. 


H-3 


525 gals. 


36xl20(horz.) 


120x62x40 


1250 lbs. 



All tanks 72 inches or less in length are furnished vertical unless otherwise ordered. Tanks over 72 
inches in length are furnished horizontal. Specify whether black or galvanized. Larger sized tanks quoted 
upon application. 

49 



DURO — GUARANTEED — PUMPS AND RESIDENCE WATER SYSTEMS 




USE 
|l/* 1/2 BOLTS 



Made in 21 sizes. Shipping Weight 260 lbs. 
Operating pressures, 25 to 40 lbs. Overall 
dimensions, 16" wide, 16* deep, 36" high. 



No. 990 "Steadiflo" 
Deep Well Pumps 

(With Double- Acting Cylinders) 

Its Use 

No. 990 "Steadiflo" Deep Well Pumps are guaranteed to 
furnish the equivalent of city water service to large suburban 
and country homes, small truck farms, office buildings, hotels, 
country clubs, dairies and greenhouses, where more than the 
average amount of water is required. They are designed to 
draw water in very liberal quantities from deep wells where 
the depth to the water level ranges between 22 feet and 150 
feet below the surface of the ground. Fire protection is also 
afforded by these Deep Well Systems. 

Method of Installation 

It is recommended that "Duro" Deep Well Pumps be in- 
stalled in frost-proof pump pits. The correct size is about 
4 x 4 feet, 5 to 8 ft. deep, depending upon the geographical 
location. Full instructions accompany each outfit. 

Special Frost-Proof Outfits 

"DURO" Deep Well Pumps can be equipped with a Frost- 
proof Set-Length so the Power Head can be set on top of the 
ground in a pump house, and the discharge connection taken 
from below the frost line. This Set-Length is extra. See 
price sheet. 



Special Features 

Elsewhere may be found details of patented, exclusive features, and superiorities of quality, construc- 
tion and workmanship. 

Specifications of No. 990 "Steadiflo" Deep Well Pumps 





Cap. 


Smallest 


Vertical 




Size of 


Inside 


Size 


Kind and 


Size 


Size 


per 


Dia. Well 


Depth 


Size 


Open 


Diameter 


Disch. 


Size of 


of 


No. 


Hour 


Cas. Cyl. 


to 


of 


Type 


Drop 


Pipe for 


Sucker 


Guide 




Gals. 


Will Fit 


Water 


Motor 


Cylinder 

^74 


Pipe 


1st 100' 
1 " 


Rod 
%" W.I. Pipe 


Couplings 


991 


370 


3W 


75' 


H HP 


M*2H" 


992 


360 


m" 


150' 


1 HP 


2M" 


W 


1 " 


M" W.I. Pipe 


Mx2^ // 


993 


565 


4M" 


60' 


1 HP 


*/4 


3 " 


IX* 


%" W.I. Pipe 


%x3 " 



Nate— Shipping weight of Style No. 990 Pumps, approximately 260 lbs. 

Above prices cover pump complete with cylinder and with A. C. motor; and automatic pressure 
controller. 

For odd cycle and D.C. motors see price sheet. 

Drop Pipe, Sucker Rod, special sucker rod guide couplings and special sucker rod guides are extra. See 
price sheet. 

Cost of Operation 

10c per 1000 gallons where the rate is 10c per Kw. hour, which is less than average cost of city water. 



In Ordering 



Specify size pump wanted, depth to lowest water level and diameter of well casing, 
if Direct Current. If alternating Current, give voltage and cycles. 

50 



Also give voltage 



DURO — GUARANTEED — PUMPS AND RESIDENCE WATER SYSTEMS 



Style 990 Deep Well Pumping System 




Its Use 

Style 990 Duro "Steadiflo" Automatic, Electric, Deep Well 
Systems were designed especially for use in the average size 
suburban or country home for supplying an abundance of 
water for all general purposes from wells where the depth to 
water level ranges from 22 to 150 feet. In selecting a "DURO" 
system, see "Guide to the Selection of a Deep Well System." 

Arrangement 

"DURO" Deep Well Systems are arranged in the most 
convenient way possible. The connections between the 
Automatic Switch, Air Compressor and Motor are all made 
or provided for, and every part of the entire system is easily 
accessible, and every detail taken care of from a convenience 
standpoint. The automatic switch is set to start the pump 
at 25 pounds and stop at 40 pounds. 



Complete System Includes 

I 1— No. 990 Duro "Steadiflo" Automatic Deep Well 
Pump complete with cylinder as listed on opposite 
page. 

1 1 — "DURO" Heavy Gauge Pressure Indicator 

[ 1 — Combined Water and Pressure Gauge. 

| 1 — Duro Relief Valve. 

1 1— High Grade Gate Valve. 

Note — Drop Pipe and Sucker Rod are extra. See 
Price Sheet. 

How to Order Systems 

(System includes Pump, Tank, Gauges and Gate Valve.) 

Important — In ordering complete systems it is first neces- 
sary to select size Deep Well Pump wanted as listed below and 
then the size tank listed, either Black or Galvanized. Then 
order by number such as No. 991 Pump with C-99 (galvanized 
or black) tank. 
Also specify depth to lowest water level and diameter of well casing. Also, give voltage if Direct 

Current. If Alternating Current, give voltage, phase and cycles. 

Operating Cost — 10c per 1000 gallons with current at 10c per Kw. hour, which is less than average 

cost of city water. 

Tanks and Accessories for No. 990 Deep Well Pumps 

(Includes Combination Water and Pressure Gauge and 1" Gate Valve.) 



This illustrates the 990 System 
which includes 990 "Steadiflo" Pump 
shown on opposite page, and tank and 
accessories listed below. 





Capacity 


Tank Dimen- 


Overall Dimen- 


Shipping 


For 


of 


sions, Inches, 


sions, Inches, 


Weight of 


Style 990 


Tank 


Dia.-Ht. 


Wth.-Dth.-Ht. 


Tank 


A-99 


42 gals. 


16x48 


22x38x52 


80 lbs. 


B-99 


80 gals. 


20x60 


22x42x64 


135 lbs. 


C-99 


120 gals. 


24x60 


30x50x64 


195 lbs. 


D-99 


220 gals. 


30x72 


36x56x76 


400 lbs. 


E-99 


315 gals. 


36x72 


42x62x76 


460 lbs. 


H-99 


525 gals. 


36x120 


120x62x40 


750 lbs. 



All tanks 72 inches or less in length are furnished vertical unless otherwise ordered. Specify whether black or galvanized. 
Tanks over 72 inches in length are furnished horizontal. Prices of larger sized tanks furnished upon request. 

51 



DURO-GUARANTEED — PUMPS AND RESIDENCE WATER SYSTEMS 



No. 3200 "Steadiflo" Super-Deep Well Pump 

(With double acting cylinder) 




, „ USE 
'/2 BOLTS 

Made in sixteen sizes, b ping weight ap- 
proximately 500 lbs. 
Operating pressures, 25 to 40 lbs. Over all 
dimensions, 19 x 19 x 59" high. 



Its Use 

No. 3200 "Steadiflo" Deep Well Pumps were designed 
particularly for use where very large quantities of water are 
required, as in hotels, hospitals, apartment houses, factories, 
office buildings, large country clubs, estates, large farms 
dairies, greenhouses and buildings housing swimming pools. 
They are guaranteed to pump water in very liberal quantities 
from deep wells where the depth to the water level ranges 
from 22 feet to 320 feet below the surface of the ground, at 
a very low cost. Fire protection is also afforded by these 
deep well systems. 

Method of Installation 

It is recommended that "DURO" Deep Well Pumps be 
installed in frost -proof pump pits. The correct size is about 
6 x 6 feet, 5 to 8 feet deep, depending upon the geographical 
location. Full instructions accompany each outfit. 

Special Features 

Elsewhere may be found details of patented, exclusive fea- 
tures, and superiorities of quality, construction and work- 
manship. 

Operation Cost 

10 cents per 1000 gallons with current at 10 cents per Kw. 
hour, which is less than the average cost of city water. 

In Ordering 

Specify size pump wanted, depth to lowest water level and 
diameter of well casing. Also give voltage if Direct Current, 
If Alternating Current give voltage and cycles. 



Specifications of No. 3200 "Steadiflo" Super-Deep Well Pumps 





Cap. 


Smallest 


Vertical 




Size of 


Inside 


Size 


Kind and Size 


Size 


per 


Dia. Well 


Depth 


Size 


Open 


Diameter 


Disch. 


Size of of 


No. 


Hour 


Cas. Cyl. 


to 


of 


Type 


Drop 


Pipe for 


Sucker Guide 




Gals. 


Will Fit 


Water 


Motor 


Cylinder 


Pipe 


1st 100' 


Rod Couplings 


3201 


630 


3^" 


50' 


1 HP 


2M" 


2H" 


134" 


%" W.I. Pipe %x2K" 


3202 


610 


3H" 


150' 


l^HP 


2X" 


2y 2 " 


\y A " 


H" W.I. Pipe Mx23^" 


3203 


580 


3H" 


260' 


2 HP 


2M" 


2M" 


\\i" 


H" W.I. Pipe Mx2M" 


3204 


905 


4M* 


75' 


l^HP 


2%" 


3 " 


m" 


%" W.I. Pipe Mx3 " 


3205 


875 


4M* 


160' 


2 HP 


2%" 


3 " 


iK" 


M" W.I. Pipe Mx3 ' 


3206 


825 


4^" 


320' 


3 HP 


2M" 


3 " 


iK" 


1 " W.I. Pipe 1 x3 * 


3207 


1250 


4M" 


85' 


2 HP 


3M" 


33^" 


iH" 


1 " W.I. Pipe 1 x3^" 


3208 


1200 


4M" 


200' 


3 HP 


3H' 


m" 


m" 


1 " W.I. Pipe 1 x33^" 


3209 


1700 


5^s" 


125' 


3 HP 


°/4: 


4 " 


2 " 


1M" W.I. Pipe 1Mx4 " 


3210 


2100 


6 " 


80' 


3 HP 


4M" 


4^" 


2 " 


IK" W.I. Pipe 1Kx43^" 



The No. 3210 is Special. Base must be removed to pull sucker rod and plunger. Opening in base is tapped 4 inches Ship- 
ping weight, Style No. 3200 pump, approximately 500 lbs. 

Above prices cover pump complete with cylinder, A. C. Motor, automatic pressure controller, chain drive, air pump and 
relief valve. For odd cycle and D. C. motors, see price sheet. 

Sucker Rod, Drop Pipe, special Sucker Rod Guide Couplings and special Sucker Rod Guides are extra. See price sheet. 
Note — Sizes 3207-8-9 and 10 are furnished with a separate check valve instead of supplying the check valve in the base. 

52 



DURO — GUARANTEED — PUMPS AND RESIDENCE WATER SYSTEMS 



Style 3ZOO Deep Well System 




Its Use 

Style 3200 Duro "Steadiflo" Automatic Electric Deep Well 
Systems are for the larger suburban or farm homes, dairies, 
institutions, country clubs, greenhouses, etc., where large 
quantities of water are required. They will pump water from 
deep wells where the depth to water level ranges from 22 to 
320 feet below the surface of the ground. They afford splen- 
did fire protection. 



Arrangement 



"DURO" Deep Well Systems are arranged in the most 
convenient way possible. The connections between the 
Automatic Switch, Air Compressor and Motor are all made or 
provided for and every part of the entire system is easily 
accessible, and every detail taken care of from a convenience 
standpoint. The automatic switch is set to start the pump 
at 25 pounds and stop at 40 pounds. 



Complete System Includes 

1— No. 3200 Duro "Steadiflo" Automatic Super-Deep 
Well Pump complete with cylinder as listed on 
opposite page. 

1 — "DURO" Heavy Gauge Pressure Tank. 

1 — Combination Water and Pressure Indicator. 

1— "DURO" Relief Valve. 

1— High Grade Gate Valve. 

Note — Drop Pipe and Sucker Rod are extra. See 

Price List. 



This illustrates the 3200 System which includes 
3200 "Steadiflo" Pump shown on opposite page, 
and tank and accessories listed below. 



How to Order Systems 

(System includes Pump, Tank, Gauges and Gate Valve.) 
In ordering complete systems it is first necessary to select size Deep 
Well Pump wanted (see opposite page) and then size tank listed, either 
Black, or Galvanized. Then order by number such as No. 3205 Pump 
with 32-D (black, or galvanized) tank, for example. 

Important — Also specify depth to lowest water level and diameter of 
well casing. Also, give voltage if Direct Current. If Alternating Current 
give voltage, phase and cycles. 



Tanks and Accessories for Above Deep Well Pumps 

(Including Combination Water and Pressure Gauge and Gate Valve) 





Capacity 


Tank Dimen- 


Overall Dimen- 


Shipping 


Size of Tank 


of 


sions, Inches, 


sions, Inches, 


Weight of 


and Accessories 


Tank 


Dia.-Ht. 


Wth.-Dth.-Ht. 


Tanks 


32-C 


120 gals. 


24x60 


30x50x64 


195 lbs. 


32-D 


220 gals. 


30x72 


36x56x76 


400 lbs. 


32-E 


315 gals. 


36x72 


42x62x76 


460 lbs. 


32-H 


525 gals. 


36x120 


120x62x40 


750 lbs. 


32-K 


1000 gals. 


48x120 


120x70x52 


1750 lbs. 



All tanks 72 inches or less in length are furnished vertical unless otherwise ordered. Tanks over 72 inches in length are fur- 
nished horizontal. Prices of larger sized tanks furnished upon request. 

Cost of Operation — 10c per 1000 gallons with current at 10c per Kw. hour, which is less than the average cost of city water. 

53 



The Duro Automatic Water Softener 




It Obsoletes All Hand Operated Types 



THE DURO AUTOMATIC OBSOLETES THE OLD STYLE HAND OPERATED TYPE 



DURO Automatic Water Softeners 

The greatest advent in the history of the plumbing business. The only household device we know of 
that does not add to the cost of living. Every month, like the rolling of a huge snowball, sales pass all 
previous records. Thousands of users in every hard water district testify to its steady, unfailing, auto- 
matic operation. Every softener backed by a written guarantee. Fully protected by patents, and patent 
applications. 



What It Does 

The Duro-Matic Softener, when connected in 
the city or well water line, softens city or well 
water perfectly. It operates automatically. 



Easy To Install 

Simply connect it in the city water line (unions 
are provided) and run a line to the floor drain. 
No muss — no bother. For old homes and new. 

It is shipped completely assembled, ready to 
operate, making installation cost low. 



Simplified Construction 

The Hydraulic Valves and parts are manufac- 
tured with a precision unknown except in the pro- 
duction of the finest, accurate, high-grade me- 
chanical products. 

The valves themselves are duplicates of one 
another. There is very little possibility of service, 
in fact, much less than in the case of pumps and 
water systems. 



Selecting Right Size 

Three important things must be considered: 

1. The average amount of water used weekly. 

2. The heaviest rate of flow required. 

3. Maximum usage during any one hour. 
The average person will use about 15 gallons of 

softened water per day. If there are four people in 
the family the average daily requirements will be 
60 gallons. Suppose the water is 18 grains hard. 
The chart below shows the AS-1 delivers 4230 
gallons between salt fillings. This will supply the 
above family for a period of 703^ days, or approxi- 
mately ten weeks. 

Larger Homes 

Where the family is unusually extravagant, and 
where there are servants and more than one bath, 
it is well to figure usage as high as 50 gallons per 
person per day. 

Always be sure that the estimated time between 
salt fillings is six weeks or longer. 

That the capacity in gallons per minute of the 
softener is sufficient to provide for maximum usage 
during any one hour. 

That the softener is large enough to provide for 
the heaviest rate of flow required. 



Specifications for DURO Automatic Softeners 

*Cap. in Gals. Salt Req, per Shipping Wt. Height- Width Gallons capacity of softeners between salt fillings on 
Size per Minute Refilling Crated Length water of various grains of hardness 

10 12 14 16 18 20 22 24 

7880 6510 5530 4800 4230 3860 3400 3080 

15490 12830 10940 9530 8410 7520 6800 6200 

30980 25660 21880 19040 16820 15040 13600 12400 

31330 26050 22200 19390 17180 15390 13950 12710 



AS-1 


6 


AS-2 


10 


AS-3 


10 


AS-4 


16 


AS-1 


6 


AS-2 


10 


AS-3 


10 


AS-4 


16 



50 
100 
200 
200 



50 

100 
200 
200 



320 
395 
445 
540 



36x17x36 

46x17x37 
46x18x37 
46x18x42 



320 
395 
445 
540 



26 28 30 34 

36x17x36 2820 2600 2400 1920 

46x17x37 5690 5250 4880 4250 

46x18x37 11380 10500 9760 8500 

46x18x42 11710 10820 10090 8840 



38 

3750 
7500 
7860 



42 

3350 
6700 
7060 



46 



50 



3030 2750 
6060 5500 
6400 5850 



*The above capacities in gallons per minute based on 50 lb. flowing city water pressure. 
All pipe connections are % inch unions except on the AS-4, which are 1 inch unions. 



A Word Regarding Hand-Operated Softeners 

Like the hand -cranked automobile, the hand-operated softener is obsolete. However, there will 
always be a limited market for it. If there is such a market in your town, write for prices and folders 
on the Duro hand-operated type. Duro can furnish it at an extremely low price. We can frankly 
say that it is much better than any softeners of a similar nature. However, we do not think enough 
of ANY hand-operated softener to list it in this catalog. 



55 



© 



< 

g 

z 

H 
O 



© 



3 

w 

s 



as 
w 

2 
u 



w 



w 



w 
y 

z 

X 

* 
o 

* 
w 

Q. 



© 



z 




o . 
re ii 

3 re 


re 
u 

2 « 


M 


U Cm 


C <u 


H 


2 c 


O 


u ° 


E 4> 


9 


° s 

to 

.2 v 


1- w 


H 


.S y 


(0 


o +3 


hfl 


2 



to c 

So. 


3 s 


O 


o& 


o tt 




<H tO 


►7 <u 
<h CUB 



z 
o 

H 

Bfi 
U 

a, 

o 







o 2 .5 
5 o «* 



w 

M 

y 

z 

M 

PS 
0. 



C c 
£ o 

V) CO "™" 



aj re 

re 3 *-i 
W 8* C 



>i re 



If 

ft . 

0.-0 



C 0* co 

E&3 

u M a 

*j * o 

o y 

O M 

Q o-S 

m i a 

*-* to u 
O 3 C 

re j-» 

o y g-£ 



3 — 


M 




ft i £ 


U 


y 


t or 
salt 
le sa 


u 


y 





re 


a 


a 

n 



re 



£ 52 



c re 
re it 



re q£ , 
^ o i* 

OJ X 



1 »h 3 



3 
ft 



re y 
c ^ 



a 

3 



re 

v 
C 
y 

<— . 

o 

CO .' 



I.H 



ft. a 



? s 

re 
■o«£ 



£ re o 

C 8 io 

«j y u 

u *-* r 1 

3 3 

^ O O 

^ a-o 



« o S 

> « * fc s 

« h c P £ 

g *j re ij <u 

S re m S *j 

* _ o u 

u O " U 

q *o O ^3 a 

u o o 

4J P ^^ u _! 

^ o w *3 re 

*9 •§ 0, 43 



to b 



■*-• 3 



m 3 



<Z 



UD 
3 



t» 3 

u O 

5 » 

8 £ 

fc43 

o *" 



*o « 

3 3 



3 *J 
% 6 



*0 >> 

3 3 

o re 

ft « 



o S 

•o o 

V 



n 



H 



■2, c 
•o "g 

■ S * 
>»«c .ti 

'K ■£ "re 
re .ti u 



3 



3 



*j re 
1 ■ 3 

s 

o ii o 
^^ o 

? >.'-5 

a*3 o 



3 

Q 



fe 1 ^ 

& 3 
_ O 

fc-o 
5 5 

U 3 
S re 

3 s 



ws "3 3 

J 5 a 

re o. •£ 

3 <l> 

J- 1 « w- 

re 

u j 

5.5-5 

w Jj re 



3 O 3 

^h s re 






re i> 
o-ft 



re (-, jj 
s re T 

^ re S 



o 

u 

a 



.?i 



a ' 
o i 



re 

a 



c 

Si 

o 



< J3 



2 ts 

|| 
ii 

o ^ 
x a 

CO 



c 5 
o 2 






3 
re 



g- 5 



BJJLO 
3 <N 

?^ 





V 

y E 

?X 

i3 oj 



3 

3 O 



> ft 4J 



.— re 

o >? 
S5X 



S 3 T3 

s * § 

3 || 3 

O* u 

<u o a 



>^.i -o 

c£ « 

2 w « 

co U O g 
QJ c W 

«3 3 t- .3 

U OD <J ^ 

re 3 t; « 
q, ■ - re u 

re^ M o 

11 &| 

»4 re y Js 



•9 >» 



*o X! 



S5 a y 

O co 55 
ftji 3 

*:*^ u 
y g| « 

S of « 



i: o 

re jz 



O ft u 

"*n S o> y 

■ *3 ? 

feci 
3 w -3 

y «j jz o 
6§ * » *j 

u 3 re 3 

y ' w 
dd y ^ S 

3 — c 

•r * 2 •« 



-o 

3 




s 

re 
a 



■p c 

Xft 



X 3 £ 

ij (L* O 

^_i CO «J 

re 3 re 

s^ 1 



<.t! 

CO 

S 3 
3 



§33 

n 1 

D to 

I • a 
1 § o 

M.2 3 

St I 

w <u re . 
•55 u y c 

D ^ 3 o 



si 
Sg 

3 3 

re 

^ c 



to qj 
3 a 

3- 



3 

8£ 



« re .3 

y £ 
,3^-o 

5S! a co 



y 



re 
re y 

re C 



■ie 



-2*5 o 



H "3 



3 

a 3 . 

to .3 



-M 3 

ii X -r 
re oi) 3 

y <u 

>-S"g 

-*- 1 to 

o a 

£1, 3 w 



| >»c 



1W 

O y ^ u 

x '5 
., *f y re 

iS ss « 3 
N 3 u re 



Q 

E 

W 

BQ 

W 

w 

H 
S 

o 
S 

w 
a. 

D 

CD 



< 

w 

(0 

W 

S 

H 

2 
< 



< 

o 

H 

O 

efi 
D 

Q 

w 

s 



-J 

Z 

o 



BUILD IT FINE R— A ND BUILD IT TO LAS T— D URO SLOGAN 



Detailed Crass Section of the Famous 
Duro Automatic Water Softener 



Showing A Masterpiece 
In Modern Engineering 

A glance at the cross- sectional view is 
enough to convince most anyone familiar 
with fine construction that the DURO 
Automatic Softener is built right in every 
particular. Every small detail of construc- 
tion is carefully worked out and manufac- 
tured with a precision unknown in most 
mechanical products. 

Scores of inspections and tests insure 
that when the DURO Automatic Softener 
is installed in a home it will function prop- 
erly from the beginning, and will render 
day-in and day -out service for years. 

Simple Construction 

After all, the Duro Softener is simplicity 
itself. There is no mystery about the 
operation once it is understood. The 
valves, of which there are six, are all of 
approximately the same construction and 
operate very similarly. When you know the 
detail of parts, and how one valve operates, 
then you can readily understand the 
operation of all of the other hydraulic 
valves. 

A school is maintained for dealers at the 
Dayton, Ohio, plant, and occasionally 
schools are conducted in different parts of 
the country with the viewpoint of familiar- 
izing every dealer with every detail of the 
automatic softener from an installation, 
sales and service standpoint. 

If you have not already attended one of 
these classes, write the Duro Company 
immediately, inquiring when the next one 
will be held in your vicinity. 



Thousands of Enthusiastic 
Satisfied Users 




This 

Automatic 

Softener 

Obsoletes 

Hand-Operated 

Types 



IF HARDNESS OF WATER IS UNKNOWN SEND PINT FOR ANALYSIS 



Flow of Water On Varying Pressures 



Or 

IX 

uj 

a 



tr 

LU 

x 

Ui 

r- 

o 



u 

a 

r> 
to 

Ui 

a: 

a 



































IQO 




7 


/ y~ 


90 £ 


J- /. 


4 


rf ~ ' ^ " ^<- ± 


80 7 


5/ -^ J_± 


-V -4- -«^ 


2 " J * ^i^"i 


70 rfS- ^ 1* 


A >^^ — r — h 


— i — ffcS? —4^,Z_ 


t- 4"it_"i?z;^ ^t^ 


60 J£ ^^2 


-t- -T^"^ it I 


/ l£ J& 


! : > ! 




-*--»- A. ^- >T 




— *■ »pi— ■ -»■ '"g^ ' 1 — -H — 


40 _/ _2 


L^ 


/ v 7 X 


S^ 


30 2t ^^ 


^ ~nr~ — h- 


/ ^ -*" 




20 ^ _r ^ 




S s' ^-K 




ID ^ J^ ^-^ " 


]f 


JsjiSss^-— " 





The 



I 2 3 4 5 6 7 8 9 ID II 12 13 14 IS 16 17 18 19 20 21 22 25 24 25 

Discharge of Softener in Gallons per Minute 

above chart shows the possible rates of flow in Duro Automatic Softeners, on varying pressures. When in doubt 

always specify the next size softener. 



The possible amount of water that can flow 
through a Duro Softener depends upon: 

1. The main pressure. 

2. The head on softener. 

3. The size of the softener. 

4. The friction of the piping. 
Here is an example: 

First — say you have a main pressure of 70 
pounds. Second — the head to second story is 20 
feet or 10 pounds. Third — you are figuring on an 
AS- 2 size Softener, because its capacity between 
salt fillings on 20 grain water is 7520 gallons. 
Fourth — customer requires a 10 gallon per minute 
rate for two showers 50 feet away delivered 
through %" piping. 

From the friction table printed in the Pump 
Data Section you will find that 10 gallons a minute 
through 50 feet of %" pipe will develop practically 
10 pounds of friction. Therefore, 10 pounds head, 
plus 10 pounds pipe friction equals a total of 20 
pounds. This deducted from 70 pounds main pres- 
sure leaves 50 pounds available pressure on 
softener. 

Now note the curves at 50 pounds. An AS-2 or 
AS-3 will deliver 10 gallons per minute for the two 
showers. 



Suppose in the above example the demand had 
been for a 12 gallons per minute rate instead of 10 
gallons. The AS-2 or AS-3 would not have been 
able to deliver such a rate at the available pressure. 
(See curves.) As an AS-3 size is on the same curve, 
an AS-4 would then have to be recommended. 

If this customer in the latter case, would have 
been willing to take less than a 12 gallon per minute 
rate for the showers an AS-2 or AS-3 would have 
been used, but the flow of water from the shower 
would have been restricted. In specifying a softener 
always figure the Maximum demand in gallons 
at any single time, as the rate of flow to deter- 
mine the proper size of Softener. 

As a matter of information by connecting a pres- 
sure gauge in the line at or near the point the 
Softener is to be installed and opening wide the 
fixture or fixtures which need the greatest amount 
of soft water, the pressure gauge will indicate the 
pressure which will be on the Softener. By this 
method the pipe friction and the head on the 
Softener will be taken care of automatically. 

It is essential in specifying Softeners that you 
learn to use the above chart showing possible flow 
of water through Duro Automatic Softeners. 



58 



DURO SOFTENERS WILL NOT REMOVE THE IRON IN THE WATER 



Selecting The Proper Size Softener 



In the automatic water softener chart is shown a 
table of capacities in gallons of softened water be- 
tween salt fillings on water of various grains of 
hardness on each of the different size softeners. 

The customer usually wants to know how often 
he has to refill the salt tank. By dividing his 
weekly usage into the capacity between salt fillings 
you get the number of weeks the salt storage will 
last, approximately. 

For example, a customer's water is 20 grains 
hard. He averages 500 gallons a week. You 
specify an AS-2 at 7520 gallons capacity. There- 
fore, one salt charge will last fifteen weeks. 

In determining the correct size softener to specify 
there are three important things to consider: 

First — Average weekly consumption of water. 

Second — Peak loads at any interval. 

Third — Maximum usage during any one hour. 

While usage of softened water varies, research 
has shown us that it is safe to figure from 15 to 25 
gallons of hot and cold water per person per day for 
average families. If softener is used on hot water 
line only, figure 15 to 20 gallons per person per day. 
Water should not be softened for flushing toilets 
or sprinkling lawn. Where there are servants and 
several baths and water is used extravagantly, 
figure from 25 to 50 gallons per person per day. 

The AS-1 is limited for water of 34 grains hard- 
ness and under. At 30 grains the AS-1 will supply 
2400 gallons of water, or enough for a forty day run 
between salt fillings, figuring on a family of three at 
20 gallons per person per day. 

The best practice in specifying water softener 



size is to recommend an automatic softener that 
will not require more than one regeneration a day. 

On the AS-1 on any hardness of water under 34 
grains be sure that the time between salt fillings is 
not less than six weeks. 

On the AS-2 on any water of 50 grains hardness 
or under be sure that the time between salt fillings 
is not less than a six week period. 

On the AS-3, because of the larger salt storage, 
be sure that the time between salt fillings is not less 
than a twelve week period. 

On the AS-4 a six week period. 

This applies in all cases except where the by-pass 
is eliminated. In such cases regenerations and salt 
fillings can take place just as often as the condi- 
tions warrant. 

Duro Softeners are rated in sizes according to 
their capacity in gallons per minute. The AS-1 is 
for the small sized home, with a capacity of six 
gallons per minute. 

The AS-2 and AS-3 with a capacity of 10 gallons 
per minute, or 600 gallons an hour, is for the aver- 
age sized home. It will take care of two shower 
heads and other average fixtures at the same time. 

The AS-4 is for still larger homes with a capacity 
of 16 gallons per minute. 

The rate of flow, of course, limits the maximum 
usage during any one hour. If the anticipated 
usage is greater than the rate of flow it is necessary 
to use the next size softener with an increased rate 
of flow, or to use two softeners in parallel arranged 
to regenerate alternately. For instance, two AS- 
2's in parallel will provide a rate of 20 gallons per 
minute, but regeneration periods will reduce 
hourly capacity. 



Architects Standard Softener Specifications 

General — The Plumbing Contractor shall supply and install one (1) Style Duro Automatic Water Softener. 

Rate of Flow — The Automatic Softener shall have a rate of flow of gallons per minute, against pounds flowing city 

(or well) water pressure. 

Capacity — The Automatic Softener shall have a guaranteed capacity to soften between salt fillings gallons of water 

containing a hardness of grains per U. S. gallon, which is the hardness of the water supply to be softened. 

Guarantee — The Softener shall be guaranteed in writing by the Manufacturer. 

Installation — The Softener shall be installed as close to the meter as possible. In case of an AS-1, 2 or 3 Softener a direct % r 
line is to be run from the meter to the softener to provide ample flowing pressure at the softener at all times. In case of the AS-4 
a direct 1* line should be run from the meter to the softener. 

The softener shall be installed so that the meter box assembly shall be easily accessible. 

The Contractor shall make installation in accordance with the approved and highest standard of craftsmanship, and in 
accordance with the plumbing code. The contractor will be required to make suitable tests before final approval of the installation. 

59 



THE DURO AUTOMATIC OBSOLETES ALL HAND-OPERATED TYPES 



Thousands of T)uro ^Automatic Installations 

' r 




Here are a few typical installations of 
Duro Automatic Water Softeners, and 
homes in which they are installed. Note 
the installation diagram in center. At the 
lower right is a multiple installation, 
showing connections. 

Every dealer selling Duro Automatic 
Water Softeners should have a Scrap Book 
and Photo Album. With very little 
practice you can take a good picture of an 
installation with an ordinary kodak. This 
photograph pasted on a page in your scrap 
book, together with a testimonial letter 
from the user, will represent one of the 
most effective sales helps that you could 
possibly use. Start a picture album today. 




THOUSANDS OF DURO-MATIC SOFTENERS IN DAILY USE 



Folks Like the Duro-matic on Sight 




44 Just Dump in a Bag 
of Salt and Forget It" 

Fill up the salt tank with pure 
coarse Farmers Salt or pure rock 
salt, replace the cover and for- 
get it for months. Then when 
the red flag again rests on the 
cover lid simply remove the cover 
and dump in another bag of salt 
and forget it for several more 
months. That's all there is to 
operating the Duro automatic 
softener. And you get more 
softened water per pound of salt 
than in any other type of Softener 
— hand-operated or otherwise. 

It's ingenious — yet so simple. 





"Now Watch It Regen- 
erate Itself— There 
It Goes!" 

This Duro Automatic regener- 
ates itself without any attention. 
It can't forget when it is time to 
regenerate. No longer is it 
necessary to go to the basement 
and endeavor to untangle a con- 
fusion of valves; weigh out salt; 
fuss with rusty manhole covers; 
wasting valuable time and losing 
your temper in doing something 
that can and should be done 
automatically, without any at- 
tention. Go over the Duro- 
matic from a mechanical point 
of view. You'll be amazed. 

Many Thousands 

In Use 

Duro has proved itself to 
thousands of householders all over 
the United States. It is sold only 
on the basis that it will do 
exactly what we claim for it or 
it will be removed at once. 
Could anything be fairer? 



Rough, irritated skin 

or soft and pliable— 

WHICH? 



Gosh! That Is Suds— 

When Can You 

Install It? 

That suds with only one drop 
of soap as compared with twenty 
in hard water. Just install 
Duro and you'll be living in a 
new world of pure, softened city 
Water. Show your Softener to 
your neighbors and friends, when 
it is installed — send them around 
to the store and I'll be glad to 
demonstrate to them also. No 
home is truly modern without a 
Duro Automatic Softener. 




61 




c 

u 

o 

■a 

o 
o 





c b 

CO 3 

X o 

* >> 



Pi? 
| 

D u u 
.£ CO CO 



is 

G h 



3 O 

£ 60 
•" G 
to X 
cu TJ 
*j <U 
CO « 

.Sx 
s & 

-— to 

s s 



3 

o 
•a 

C 



.££ 
W a 



o 



CO 60 

cu c 
fc a 



o B 



CO 

xSx 

-. -m > y 

J w at 3 

a to<~ 

5*2 Si 

o h . *j :g 

3 p &o £ 



to 



x | « 

* S3 „ 

MM CU 

*0 "> 

y 

co co 
3 <U u 

_c t3 *i 

* CO « 

, o ? 

y a. 

* B'S 



C W « 

cd a 

O 60 C 
CO 3 



u 



x c g 

>> CO ±j 



-co"! ^Q 



o * 



(O <u 



O ra G 



G 

Si 

w X 



*o >> r y 



. I « « 
a £ S £ 



C 



c 

X 



Hto u. 
<u o 

■p a CO 
3 C 

co a ■ S 

W *S 2? 

CO u 

(j ri, 

« Ml ^ 

tf CXI 13 

<u C X E 

y 93 *s <m 

> •£ •§ o 

Ot « Sx 



X 

o 



6 I 



3 C ■ 

° «"P 



x 



O 

a 



.- O (u CO 

-£ X! r- 

1-1 ■" - >. 



3,° 

O u 



^ 5 



V V J 

xjxj S 

co ^ o 

x: ? a 



+j Xi +j 

AJ CO 

qj 4> *n 

*— X) w 

w jj XJ 

£ c o-S 

o q d 

fV c dJ c k 
% CO C CO JS 



CO O, 



0/ 60 

4> O C 

o* 2 

C C co 

CO u„ 

18 » O 

> a 

M W II 

co S « 

CO M 3 



"55 X 

M t»0 



« 60 

c 

to "aj 



> B 

CO CO 



CO 



o 

XJ 



C 

CO 



a v 



•a 

o 
o 

O 



-a 

c 
o 

£ 
2 i 



CO £ 

<u u 

U <u 
60 > 

to ?Z 

4-> CO 

> s 

cu CO 

(X aj 






c y 

-4-J 

5 

1 XI 

I Ha 

to _c 






CO CO 

y 



w 



CO 



C co 

<L» CU 



8 T 

CO I 

2 'I | 



■• ca 
£ en 

l« 
|| 

C co 

S «i 

e co 



•p J 



•* £ 



qj CO 

85*3 



to 13 
OJ C 
»-) co 



3 ^ 

a 

60 £* 



m 



3 
o 
>> 

co <u 
CO 






CO'D l 

N CU 

CO +- 1 

•C ** S 

c > 

CO - 

S c £ 

•g 60 <u 

•" CO -M 

4-> CO 

CO ■- 

OJ ° 

CO 
C 



60^ 



c C: 5 
xl « y 
W px 



OJ co • i 

"5 8 2 

cu T3 _-o 
J2 c C C 
C CO^ co 

1> .to 

£ 

3 CO C - 
O o to 

2 .s S « ? 



"o y c 



» " o 



:-* fc 



H w ax *3 



T3C*2 

C Sf S 
xi t-o 
§ a a 
C 3 2 

>Vi 7Z X 



-a 

c 



X 



x w 
: £ 

x 

CO +J 

^> CO 

£-° 

CLt^O 



-a 
c 

p 
o 



60 



X 



> * J 

OJ cu 



13 8 
£xi 

CO 

ex 

-o'l 
c 
co *o 

c 8 
.S co 

CO 

o.H 

m cr 
G 4-1 

10 S te 

us? 



T3 

G 



CQ 



t? s 

u. CO 

xj y 

Q J2 



*3 

to CO 



O - 
O "co 



cx-n 



> 

■ 5 o 



G 3 <u 

<L> Q, U 

^*£ w 



67 



CO .« r* 

i-, co ™ 

3 

O £ 

a Ha 

CO co 
O <U 
co ^ 

LJ 

a.s 

S a 



■c I 

c I 
co ra 

o 
>> 

CO CO 

to p 

"5b r 



.3 T3 

CO G 

x « 

G S 
•5 ca 



"2 6- 

CO O 
•- X 
60 co 



CJD 



3 •0>l 

' G «: 
• CO 3 
J T3 CG 



it I £ 2 

EU to .3 a 



<U "L» C 

^ £ 3 
g §x 



CO w 

T3 3 •* 

CU CO Tl 
to <L> e 



T3 
G 
CO 



T3 60 

c £ 

s > 



CO Cm 

CU CO 

^X 
M CO 



to 

y 

'C u 

c 

4J 



s 5 

o <o 
U £ 



13 

C 



<£! g: 



CO ^ 

5£ 



X 



60 
C < 



X co 

£ Jo 

3 £, 

a£ 



G 
O 



O Si 



(0 

W 

H 

Bf 
W 

a 

H 
O 

i-1 
i-1 

< 
V) 

u 

H 
W 

i-l 

o 

(A 

BQ 

O 

w 
2 

u 

H 
h 
O 
w 

tf 
w 

H 



o 

H 

o 

Q 
H 

s 



i 



THE DURO-MATIC OBSOLETES ALL HAND OPERATED TYPES 



zA Qonvincing Window T>isplay 




LIME CHOKED PIPE 

Hard water ruins pipes, hot 
water heaters, furnace coils. 
lange boilers, steam Ming plants, 
and plumbing Fixtures. 

-duro — 




Any dealer can readily secure the articles necessary for the above display. It visualizes the whole story. 

Get three one gallon jugs. Use pure liquid soap to make the suds. Be careful not to get too much soap in the soft- 
ened water. Add liquid soap in proportion and shake long and thoroughly to get clear water and suds which will last for 
hours. A teakettle cut in two, a piece of lime-scaled pipe and a number of bars of soap to correspond to the hardness of 
the water, make up the display. Write for a set of cards. 



J 




President 

, - Signed a t Day ton, Ohio, this day 

mm 
o/_ - 19 

Sold by 

Address 

Date 



I