Penberthy BB-21, AA-21, CC-21, DD-21, EE-23 Technical Data Manual

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PENBERTHY

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TEL: [phone] ext. 23 for Venturi Group

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NORTHEAST CONTROLS INCORPORATED

TEL: [phone] ext. 23 for Venturi Group

[e-mail]

automatic
injector

This technical bulletin includes general
information about Penberthy Automatic
Injectors plus specific details for individ­ual unit selection. Used primarily as
boiler feed pumps, Penberthy Automatic
Injectors are used in numerous other
applications for pumping liquids and dis­charging at high pressure and tem­perature.

Section 1000
Bulletin 1500

Issued 6/87

Re

laces 9/77

The Injector

r

NORTHEAST CONTROLS INCORPORATED

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[e-mail]

The Injector may be defined as a boiler feeding pump,
utilizing the velocity and condensation of a jet of steam
from the boiler to lift and force into the same boiler a jet
o water many times the weight of the original jet of
steam.

Although they are generally considered as boiler feed
pumps, injectors are also often used on other applica­tions where hot water under high pressure is desired.

ADVANTAGES

The injector offers defin ite ad vantages over me­chanically operated pumps when cold water
make-up is used to feed boilers. Some of these
advantages are:

Unit is compact, has no mechanically operated

3

parts and requires no foundation or floor space.

4

First cost and maintenance are low.

Warm water is fed into the boiler without the

1

necessity of preheating the water.

Operating steam is condensed and returned to the

5

boiler resulting in a thermal efficiency of nearly
100%.

It is not dependent upon an outside source of

2

power.

6

Dependable in operation.

Operating Principle of Penberthy Automatic Injectors

When steam supply valve is opened, steam passes
through steam jet into suction chamber, proceeds
through suction jet and out of the overflow. Steam,
which attains a velocity of approximately 2500 ft per
second as it leaves the steam jet, entrains the air in
suction chamber and creates a vacuum.

The vacuum created in suction chambe
begins to draw in water from supply line.
The water is now entrained by the steam
and a high velocity mixture of water and
steam passes through the suction jet and
out of the overflow.

2

The Company

p

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NORTHEAST CONTROLS INCORPORATED

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TEL: [phone] ext. 23 for Venturi Group

[e-mail]

Since its organization in 1886, the Penberthy Manu­facturing Co.* has been well known as a leading
manufacturer of injectors. As a result of its superior
basic injector design, continued improvements in
performance, manufacturing methods and standard
of quality, Penberthy leadership in the injector field
has been universally recognized for many years.
Penberthy injectors and service parts may be

PENBERTHY AUTOMATIC INJECTORS

Automatic Restarting

All Penberthy injectors are of the automatic restarting type.
If the established flow of water from an injector to the boiler
is interrupted temporarily by t he admission of air into the
suction line or by a jolt causing the overflow valve to open,
the injector will automatically reestablish flow without the
necessity of regulating any valves.

Feeds Warm Water to Boiler

Penberthy injectors feed water into the boiler at a tempera­ture of from 130°F to 212°F depending upon the steam pres­sure and temperature of the supply water. By throttling the
water supply line, feed water temperatures up to 212°F can
be obtained under most conditions of operation.

Design

Injectors are designed so as to give well-balanced operation
against the greatest possible range of steam pressure, water
tem

erature and suction lift and to maintain satisfactor

purchased from any one of the thousands of jobber
and dealer representatives in all principal cities and
countries of the world. Their knowledge of the vari­ous applications of the Penberthy injector, covering
many years of experience, assures prospective users
that they will obtain intelligent engineering sales
service.

performance for a long period of service. Designs are t he
result of years of experience with injector applications.

Injector connections have uni on tailpipes permitting quick
removal from the line.

all parts are easily removed for cleaning or replacement and
are precision made to assure interchangeability in the field.
Workmanship is highest quality. Years of manufacturing has
resulted in the training of skilled craftsmen and the develop­ment of advanced production methods.

Material

Injectors are of all bronze construction with special bronze
alloys being used for suction and delivery jets to resist wear.

Inspection and Testing

All injectors are tested at the factory on actual boiler installa­tions, assuring that injectors will meet all performance claims
as specified for the various models.

When the amount of steam and water reach the proper
proportion, the steam gradually condenses as the mix­ture advances through injector. Upon reaching deliver

et parallel the mixture is fully condensed.

*Formerly Penberthy Injector Co.

The energy contained in the water passing through delivery jet is sufficient to
build up a pressure, greater than the boiler pressure, causing water to flow
through the discharge check valve into the boiler. When flow into the boiler is
established the overflow valve closes automatically and prevents the entrance
of air which would disrupt operation of injector. Total operating cycle requires
only a few seconds.

3

Applications

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Required Information

Injectors are installed as auxiliary equipment on pow er
boilers, package steam generators, locomotive boilers
and heating boilers that are required by many industries
such as:

Manufacturing Industries:

oil production and ref ining, agriculture, mining, lumber,
etc.

Service Industries:

izin

, dairies, laundries, public utilities, transportation,

Pressing and dry cleaning, vulcan-

Food processing, chemical,

Uses

Uses for injectors can be classified generally as follows:

Stand-by Boiler Feed Pump Service

Injectors provide boilers, which are already equipped
with mechanically operated boiler feed pumps, with a
reliable low cost secondary means of feed water supply.
Many boiler manufacturers supply Penberthy Injectors
as original equipment on their steam boilers.

Primary Boiler Feed Pump Service

Boilers not provided with mechanical feed water pumps
can depend upon injectors to function satisfactorily as
the sole source of feed water supply.

Preheating Make-up Water

On applications where the water supply pressure ex­ceeds the boiler steam pressure, injectors may be used
to heat the water before injection into the boiler, avoiding
the disadvantage of cold water striking hot boiler sur­faces.

Injecting Feed Water Treatment Compounds

Suitably diluted mixtures of boiler feed water treatment
compounds are picked up and injected into the boiler
without difficulty.

Injector can be properl y selected by c onsidering the
following facts relating to the operating conditions under
which the injectors will be required to work:

1. Lowest and hi ghest operating steam pressure car­ried by the boiler

2. Vertical distance that the supply water must be lifted,
if the water supply is below the injector, and the
horizontal distance from the water intake to the in­jector.

3. The supply water pressure if the water is taken from
the city mains or from elevated tanks.

4. The temperature of the supply water.

5. The maximum rate of evaporation of water from the

Capacity

The size of the injector to be selected depends princi­pally upon the rate at which the boiler is called upon to
evaporate water. It should be chosen so that it will de­liver at least 30% (preferably 50 to 100%) more water
than the expected maximum evaporation rate of boiler.
Catalog horsepower ratings are based upon supplying
approximately 75% more than the rate of evaporation of
a boiler operating at full rating, or between 7 and 8 gal ­lons per boiler horsepower. Ref erence to injector per­formance tables will indicate that the capacity of an in­jector will vary, depending upon the operating steam
pressure, suction lift, suction water temperature or a
combination of these conditions. Unless an injector is
already operating at limiting conditions, its capacity can
be reduced b

regulating the water supply line valve to

High Pressure and Temperature Water Supply

Injectors may be used as a source for obtaining a supply
of hot water under high pressure for washing floors,
containers, machine parts, etc. When used for this pur­pose the discharge nozzle must be sized to suit the
injector capacity. See page 10 for details of installation.

Selection of Injectors

Models or types of injectors are available from which to
select an injector that will operate satisfactorily and effi­ciently under vi rtually any f ield conditions that may be
encountered in steam plant practice with steam pres­sures up to 250 pounds per square inch.

Catalog Data

By referring to performance and dimensional information
given on t he following pages, the injector that will best
suit the capacity and operating conditions of the applica­tion can be readily selected and s pecified. In the event
of unusual operating conditions or doubt as to proper
selection, our engi neering department is available to
offer recommendations and suggestions.

4

PENBERTHY Standard INJECTORS

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FOR SUCTION LIFT APPLICATIONS

WITH STEAM PRESSURE

FROM 25 TO 140 PSI

SUITABLE FOR STEAM PRESSURES

UP TO 250 PSI WITH

WATER PRESSURE SUPPLY

Penberthy Standard Injectors are available in two body styles and
8 sizes with screwed connections from 3/8” to 2 1/2” pipe size,
having capacities as given in performance tables on page 6. They
are designed to meet the requirements of most applications and
will operate satisfactorily within the following range of operating
conditions:

Suction Lift Applications

STOCK MODEL

SUCTION LEFT – DELIVERY BACK

SUCTION FRONT

DELIVERY BACK

Start Low: 25 psi steam pressure with 3 ft lift and 74°F water

Work High: up to 140 psi steam pressure with 3 ft lift and 74°F
water

Lift Water: 20 ft at 60 to 80 psi steam pressure with 74°F water

Maximum temperature of Suction Water: 3 ft lift and steam pres­sures as follows:

120°F at 60 to 80 psi
115° at 100 psi
105°F at 120 psi
90°F at 140 psi

Water Pressure
Supply Applications

When water under pressure is connected directly to the injector
suction, Penberthy Standard Injectors can be operat ed at steam
pressures up to 250 psi. At steam pressures of 100 psi or more,
capacities are substantially increased and w ater supply must be
regulated with extra care. On applications where steam pressures
are below 100 psi, Penberthy “Low Pressure” Injectors are recom­mended.

*BO ILE R

SIZE

NO.

OO-21 12 3/8 2 1/2

AA -21 25 1/2 3 1/2

BB-21 50 3/4 5 1/2

CC-21 85 1 8

DD-21 150 1 1/4 12

EE-23 250 1 1/2 25

FF- 23 42 5 2 39

GG-21 600 2 1/2 75

*Boiler horsepower ratings based on supplying approximately 7 gallons of water per horse­power per houre with 3 ft scution lift and 80 psi steam pressure.

Each injector is supplied with all bronze pipe strainer one size larger than injector connection
for installation at end of suction pipe.

Size 00-21 injector is provided with relief valve to facilitate starting at lower steam pressures.

Size 00-21 injector is supplied with two small strainers for insertion in the steam and water
supply union connections.

IMPORTANT

Injectors deliver their maximum capacity and operate to better satis­faction n the intermediate zone of their pressure operating range.
When selecting an injector, in order to be assured of best possible
performance, refer to Pagers 5, 7 and 8 covering operating charac­teristics of the Penberthy Standard, High Pressure and Low Pressure
Injectors.

HORSE­POWER

RATING

PIPE
SIZE

CONN.

(IN.)

SHIPPIN G

WEIGH T

BOXED

(LB)

See Page 6 for Dimensions

See Page 9 for Installation Data and pate 11 for Repair Parts

5

PERFORMANCE OF PENBERTHY STANDARD INJECTORS

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SIZE

NO.

OO-21

AA-21

BB-21

CC-21

DD-21

EE- 2 3

FF-23

GG-21

Suction Lift Operation

Capaci ties in Ga llons per Hour at Various

Suction Li fts-74°F Water Temperature

LIFT

IN FEET

3 607080756555

8 5065757061.. ..

12 45 55 70 65 55 .. ..

16 36 50 65 60 45 .. ..

20 .. .. 45 60 53 .. ..

3 150 175 180 165 155 150

8 142 165 157 145 135 .. ..

12 135 155 135 133 120 .. ..

16 120 140 125 110 .. .. .. ..

20 .. .. 110 110 .. .. .. .. .. ..

3 300 350 350 310 295 280

8 290 300 300 270 250 230

12 260 270 265 240 220 .. ..

16 .. .. 240 235 215 .. .. .. ..

20 .. .. 220 210 .. .. .. .. .. ..

3 540 585 585 550 520 480

8 520 550 540 490 470 460

12 420 425 420 400 390 .. ..

16 .. .. 405 390 380 .. .. .. ..

20 .. .. 360 300 .. .. .. .. .. ..

3 780 940 950 915 840 800

8 760 900 870 780 720 705

12 730 750 750 630 570 .. ..

16 .. .. 580 555 525 .. .. .. ..

20 .. .. 440 440 .. .. .. .. .. ..

3 1440 1800 1800 1740 1620 1500

8 1300 1710 1710 1600 1460 1320

12 1200 1500 1500 1450 1400 .. ..

16 .. .. 1220 1200 1150 .. .. .. ..

20 .. .. 1020 1000 .. .. .. .. .. ..

3 2200 2520 2940 2880 2640 2500

8 2200 2520 2400 2160 1920 .. ..

12 2040 2280 2160 1920 .. .. .. ..

16 .. .. 1920 1800 1560 .. .. .. ..

20 .. .. 1560 1400 .. .. .. .. .. ..

3 3140 3600 4200 4100 3750 3550

8 3100 3600 3430 3100 2700 .. ..

12 2900 3250 3000 2700 .. .. .. ..

16 .. .. 2740 2550 2200 .. .. .. ..

20 .. .. 2200 2000 .. .. .. .. .. ..

40 60 80 100 120 140

STEAM PRESSURES--PSIG

Pressure Supply Operation

Cpacities in Gallons per Hour with 12 PSIG

Wat er Pressure Supply at 74°F Temp erature

SIZE

NO.

OO-21 80 95 100 115 115 110 105

AA -21 180 210 225 255 255 245 230

BB-21 350 405 440 490 490 475 445

CC-21 585 675 730 820 820 790 745

DD-21 950 1095 1190 1330 1330 1285 1205

EE-23 1800 2070 2250 2520 2520 2430 2285

FF-23 2940 3385 3675 4120 4120 3970 3735

GG-21 4200 4830 5250 5880 5880 5670 5335

80 100 120 140 160 200 250

Capacities shown are maximum amount injector can pump
at steam pressures indicated. If flow exceeds amounts
shown, due t o excessive water supply pressure, valve in
water supply line can be regulated to provide correct flow.

Capacities are redu ced if injectors are required to handle
water at higher than normal temperature. When operating
with a 3 f t lift at the limiting temperature, for a given steam
pressure, capacities are reduced approximately as follows:

Water Temperature

STEAM PRESSURES--PSIG

90°F 100°F 110°F 120°F

Reduction in

capacity in %

10 12 15 20

Dimensions of Penberthy Standard

and High Pressure Injectors

SIZE

NO.

OO 4 3/4 2 1 3/4 2 3/8 1 1/4 4 1/2 3/8

AA 5 7/8 2 3/8 2 3/8 2 5/8 1 1/4 5 1/8 1/2

BB 7 1/8 2 3/4 2 7/8 3 1/8 1 5/8 5 3/4 3/4

CC 8 1/8 3 3 5/8 3 3/8 1 7/8 6 5/8 1

DD 9 3/4 3 5/8 4 1/4 4 1/4 2 1/4 7 7/8 1 1/4

EE 13 1/4 4 3/4 5 3/8 4 3/4 3 9 5/8 1 1/2

FF 15 1/8 5 1/4 6 7/8 5 1/4 3 5/8 11 1/4 2

GG 17 5/8 5 7/8 8 1/2 6 5/8 4 1/2 14 1/2 2 1/2

ABCDEFG

DIMENSIONS IN INCHES

6

PENBERTHY

p

STOC

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High Pressure

INJECTORS

FOR SUCTION LIFT APPLICATIONS WITH
STEAM PRESSURES FROM 50 TO 200 PSI

Penberthy High Pressure Injectors are available in two body
styles and 8 sizes with screwed connections from 3/8” to 2 1/2”
pipe size having capacities as given in performance table. At the
same operating pressure, they use less steam than “Standard”
injectors permitting the handling of warmer supply water and
higher suction lift as indicated by their design range given below:

Start Low: at 50 psi steam with 3 ft lift and 74° water

Work High: up to 200 psi steam pressure with 3 ft lift and 74°
water

Lift Water: 20 ft with steam pressures from 80 to 120 psi and
74°F water

Maximum Temperature of Suction Water with 3 ft lift and at
steam pressures as follows:

120°F at 120 psi
115°F at 140 psi
105°F at 170 psi
85°F at 200

SIZE

NO.

OO-326 12 3/8 2 1/2

AA -328 27 1/2 3 1/2

BB-330 50 3/4 5 1/2

CC- 332 90 1 8

DD-334 140 1 1/4 12

EE-336 275 1 1/2 25

FF-338 450 2 39

GG-340 650 2 1/2 75

*Boiler horsepower ratings based on supplying approximately 7 gallons of water per
horsepower per hour with 3 ft suction lift and 140 psi steam pressure.

Each injector is supplied with all bronze pipe strainer one size larger than injector
connection for installation at end of suction pipe.

Sizes OO-326 through DD-334 are provided with relief valve to facilitate starting at
the lower steam pressures.

Size OO-326 injector is supplied with two small strainers for insertion in the stream
and water supply union connections

*BO ILE R

HORSE­POWER

RATING

si

PIPE
SIZE

CONN.

(IN.)

SHIPPIN G

WE IGHT

BOXED

(LB)

SUCTION LEFT - DELIVERY BACK

STOCK MODE

K MODEL SUPPLIED UNLESS OTHERWISE SPECIFIED

Capacities in Gallons per Hour at Various

Suction Lifts - 74° Water Temperature

VERTICAL

SIZE

NO.

OO-326

AA-328

BB-330

CC-332

DD-334

EE- 3 36

FF-33 8

GG-340

LIFT

IN FEET

3 5468848991858176

8 50617477787268.. ..

12 43 52 63 66 66 61 .. .. .. ..

16 39 44 54 56 56 .. .. .. .. .. ..

20 .. .. 36 44 45 .. .. .. .. .. .. .. ..

3 130 150 180 200 210 200 190 180

8 120 135 158 174 181 170 161 .. ..

12 104 115 135 148 153 144 .. .. .. ..

16 94 97 115 126 130 .. .. .. .. .. ..

20 .. .. 79 94 102 .. .. .. .. .. .. .. ..

3 238 300 367 390 400 375 357 332

8 220 270 323 339 344 318 303 .. ..

12 190 231 275 288 292 270 .. .. .. ..

16 171 195 234 246 248 .. .. .. .. .. ..

20 .. .. 159 191 199 .. .. .. .. .. .. .. ..

3 450 510 640 680 670 640 600 540

8 416 459 563 592 576 544 510 .. ..

12 360 393 480 503 489 391 .. .. .. ..

16 324 331 409 428 415 .. .. .. .. .. ..

20 .. .. 270 333 347 .. .. .. .. .. .. .. ..

3 600 820 930 1020 1080 1000 960 900

8 555 738 818 887 929 850 816 .. ..

12 480 631 697 755 788 720 .. .. .. ..

16 432 533 595 643 670 .. .. .. .. .. ..

20 .. .. 434 483 520 .. .. .. .. .. .. .. ..

3 1220 1550 1890 2010 2050 1920 1830 1710

8 1128 1395 1663 1748 1763 1632 1555 .. ..

12 976 1193 1417 1487 1497 1382 .. .. .. ..

16 878 1007 1209 1266 1271 .. .. .. .. .. ..

20 .. .. 821 983 1025 .. .. .. .. .. .. .. ..

3 2000 2530 3080 3290 3350 3140 3000 2790

8 1850 2277 2710 2862 2881 2669 2550 .. ..

12 1600 1948 2310 2435 2446 2261 .. .. .. ..

16 1440 1644 1971 2073 2077 .. .. .. .. .. ..

20 .. .. 1341 1601 1678 .. .. .. .. .. .. .. ..

3 2750 3470 4225 4500 4600 4300 4100 3800

8 2540 3100 3700 3900 3950 3660 3500 .. ..

12 2200 2670 2170 3330 3350 3100 .. .. .. ..

16 1950 2250 2700 2840 2800 .. .. .. .. .. ..

20 .. .. 1840 2200 2300 .. .. .. .. .. .. .. ..

60 80 100 120 140 160 180 200

SUCTION FRONT
DELIVERY BACK

STEAM PRESSURES--PSIG

7

SUCTION LEFT – DELIVERY BACK

STOC

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STOCK MODEL

K MODEL SUPPLIED UNLESS OTHERWISE SPECIFIED

SUCTION FRONT
DELIVERY BACK

PENBERTHY

Low Pressure

INJECTORS

FOR STEAM PRESSURES FROM 15 TO 100

PSI WITH 3 FT SUCTION LIFT OR WATER

PRESSURE SUPPLY

Designed to operate under conditions of relatively low boiler pres­sure using cold water with a 3 ft maximum suction lift or water
pressure supply connected directly to suction connection, injector
is ideal as a feed water pump for process steam boilers used in
vulcanizing shops, dairies, laundries or for clothes pressing ma­chines.

*BO ILE R

SIZE

NO.

OO-526 12 3/8 2 1/2

AA -528 25 1/2 3 1/2

BB-530 50 3/4 5 1/2

CC- 532 8 5 1 8

DD-534 125 1 1/4 12

EE-536 240 1 1/2 25

FF-538 400 2 39

*Boiler horsepower ratings based on supplying approximately 7 gallons of water per
horsepower, per hour with 3 ft suction lift and 40 lbs steam pressure.

Each injector is supplied with all bronze pipe strainer one size larger than injector
connection for installation at end of suction pipe.

Sizes OO-526 through DD-534 are provided with relief valve to facilitate starting at the
lower steam pressures.

Size OO-526 injector is supplied with two small strainers for insertion in the steam and
water supply union connections.

HORSE­POWER

RATING

PIPE
SIZE

CONN.

(IN.)

SHIPPIN G

WIEG HT

BOXED

(LB)

Available in 2 body styles and 7 sizes with screwed connections
from 3/8” to 2” pipe size and having capacities as indicated in per­formance table. Injector uses the same body as the “Standard”
and “High Pressure” Injectors.

Capaci ties in Gal lons per Ho urs

3 Ft Lift 74°F Water Temperature

Size No.

OO-5265580756555
AA -528 125 180 170 160 150
BB-530 270 350 330 305 280
CC-532 490 585 565 520 480
DD-534 720 900 880 800 720

EE-536 1350 1700 1650 1500 1350
FF-538 2300 2900 2800 2350 2300

When operated with water pressure supply, capacities shown
in table will be increased approximately 20%.

Steam Pressures --PSIG

20 40 60 80 100

See Page 6 for Dimensions See Page 9 for Installation Data and pate 11 for Repair Parts

SIZE

NO.

ABCDEFG

DIMENSIONS IN INCHES

OO 4 3/4 2 1 3/4 2 3/8 1 1/4 4 1/2 3/8

AA 5 7/8 2 3/8 2 3/8 2 5/8 1 1/4 5 1/8 1/2
BB 7 1/8 2 3/4 2 7/8 3 1/8 1 5/8 5 3/4 3/4
CC 8 1/8 3 3 5/8 3 3/8 1 7/8 6 5/8 1
DD 9 3/4 3 5/8 4 1/4 4 1/4 2 1/4 7 7/8 1 1/4
EE 13 1/4 4 3/4 5 3/8 4 3/4 3 9 5/8 1 1/2

FF 15 1/8 5 1/4 6 7/8 5 1/4 3 5/8 11 1/4 2

8

INSTALLATION INSTRUCTIONS

p

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FOR SUCTION LIFT FOR WATER PRESSURE SUPPLY

Penberthy Injectors are used with any t ype of water supply.
To obtain the best possible results the following points should
be considered.

1. The steam pipe should be an independent line, the same
size as the injector connection and connected to the
boiler at the highest possible point.

2. If injector operates on a suction lift, the water supply pipe

should be one size larger than the injector connection ex­cept on very short lifts. On long suction lifts, a pipe 2 sizes
larger with a foot valve installed at end of pope is recom­mended. A glove valve, the full size of supply pipe, should
be installed in this line and the strainer which is provided
each injector should be attached at the end. It is very im­portant tha the water supply pipe connection including the
valve stem packing be free from leaks.

OPERATION

To Start:

valve. Next, fully open the steam valve. If water continues to
come out of overflow connection, throttle the water supply
valve until is stops. On low pressure operation it may be nec­essary to throttle the water supply valve in order t o establish
injector operation. On high pressure operation it is satisfactory
to throttle the steam valve until the water supply pipe is

Fully open the water supply valve and the discharge

rimed, but under all other conditions the steam valve should

Penberthy Injectors are used with any t ype of water supply.
To obtain the best possible results the following points should
be considered.

3. If injector water supply is taken from city water mains or an
overhead tank, better regulation of water may be obtained
if two globe valves are installed in the water supply line.
The valve nearest the injector is used to regulate the wa­ter supply while the second valve is adjusted permanently
to provide the most desirable pressure reduction.

4. The delivery pipe should be the same size as the injector

connection or larger if desired. A swing check valve and a
globe valve should be installed in this line, which should be
as direct and as f ree from elbows as the installation will
permit.

be wide open and regul ation of flow governed by the water
supply valve.

To Stop:

need not be closed unless supply water is under pre ssure.
The discharge line valve needs to be closed only as a precau­tionary measure as the check valve will prevent back flow from
the boiler.

Close the steam valve. The water supply valve

See Page 9 for Installation Data and pate 11 for Repair Parts

9

INJECTOR INSTALLATION

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FOR PRESSURE WASHING

Installed as shown above, injector will produce a high pressure hot water discharge up to 200°F.
Balance between injector capacity and total nozzle discharge capacity is important.
With proper size nozzle, and using dry steam for operation, discharge pressures equal to or even

greater than boiler pressures are obtainable.
When operating, steam valve should be open wide and water supply valve throttled to suit discharge

flow.
For ordinary conditions, reducing valves on the water supply line are not necessary, however if a re-

ducing valve is used, its capacity should be checked to ascertain that the flow will be sufficient for
proper operation.

It is important to use dry steam.
To start operation: Open water supply valve, then open steam valve wide; next, throttle water supply

valve until injector quits spilling at overflow.

10

REPAIR PARTS

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Standard

Injector

High Pressure

Injector

Low Pressure

Injector

OO-21 A A-21 BB-21 CC-21 DD-21 EE- 23 FF-23 GG-21

OO-326 AA -328 BB-330 CC- 332 DD-334 EE-336 FF-338 GG-340

OO-526 AA -528 BB-530 CC- 532 DD534 EE-536 FF-538

Steam jet, suction jet and delivery jet are not interchangeable on various models,
therefore you must supply us with serial number of injector which is stamped on
nameplate above overflow connection.

PLUG WITH RELIEF VALVE USED
ON
3/8” TO 1 1/4” HIGH AND LOW

BRASS STRAINERS

These large-capacity strainers are furnished with every injector
to prevent passageways in the jets from becoming stopped up
by foreign matter. Sizes 2” and l arger are the flat type shown
at right.

D I MENSIONS IN INCHES

Pipe size A B Wire Mesh

3/8 1 11/16 dia 2 1/4 30
1/2 1 11/16 dia 2 1/4 30
3/4 1 11/16 dia 2 5/16 30

1 1 7/8 dia 2 9/16 16
1 1/4 2 3/16 dia 2 9/16 16
1 1/2 2 1/2 dia 2 11/16 16

2* 3 5/8 dia* 1 3/4* 1/8 holes

2 1/2* 4 3/5 dia* 1 13/16* 1/8 holes

3* 4 1/4 s q* 1 13/16* 1/8 holes

11