END SUCTION CENTRIFUGAL PUMPS 2004-3 Page 1...The shaft of a centrifugal pump, in addition to radial forces, must also transmit the torque from the driver to the impeller. The rating

END SUCTION CENTRIFUGAL PUMPS

TYPE CNG

2004-3 Page 1 January 1990

Shaft Deflection and Bearing Life Data

Supersedes

October 1975

SHAFT AND BEARING LIFE DATA

Worthington CNG pumps have incorporated an optimum degree of standardization. 30 different liquid ends are affixed to only four basic bearing frames. Frame 1 accepts 6 liquid ends; Frame 2 accepts 12 liquid ends; Frame 3 accepts 5 liquid ends and Frame 4 accepts 4 liquid ends.

Shaft deflection measured at the face of the stuffing box should not exceed .002 inches. Deflections beyond this limit will reduce packing and mechanical seal life.

All radial-load curves for volute-type casing design have similar shapes. Thus individual radial-load curves have been averaged and grouped into the four curves shown on the radial load chart; the co-ordinates have been expressed in percentages. Radial loads for a specific pump can be determined by knowing shut-off load and capacity which is expressed as a percent of the best efficiency capacity.

Practice dictates that both line and thrust bearings have 16,000 hours minimum rated life. Minimum rated bearing life is the point at which 10% of bearings will statistically fail; average bearing life is equal to 5 times minimum rated life. While radial loads mainly affect the pump line bearing, they also affect thrust bearings. Therefore the thrust bearing life chart includes a reasonable value for radial loads in addition to the thrust load from suction pressure.

Deflection limits of .002 inch and minimum rated bearing life of 16,000 hours are based on maximum impeller diameter, specific gravity of 1.0 and shut-off head.

The shaft of a centrifugal pump, in addition to radial forces, must also transmit the torque from the driver to the impeller. The rating curves 2004-8 list the maximum allowable bhp for specific rotative speeds. Since torque times rpm is proportional to horsepower, shaft limitations can be calculated for other speeds.

PUMP SIZE

REFERENCE DATA CHART

FRAME DESIGN SIZE RPM

RADIAL LOAD CURVE

REFERENCE

SHUT-OFF RADIAL LOAD

POUNDS 3/8 CNG-4 1 3600 A 5 3/4 CNG-42 1 3600 A 18 3/4 CNGE-42 1 3600 A 18 1 CNG-32 1 3600 A 21 1 CNG-42 1 3600 A 29 1 CNG-52 1 3600 A 32 1 CNG-64 1 1800 A 12 1 CNG-62 2 3600 A 50 1 1/2 CNG-52 2 3600 B 53 1 1/2 CNG-62 2 3600 D 54 1 1/2 CNG-74 2 3600 C 135 1 1/2 CNG-84 2 1800 A 39 1 1/2 CNG-104 2 1800 B 62 2 CNG-52 2 3600 B 86 2 CNG-62 3 3600 A 150 2 CNG-74 2 1800 C 59 2 CNG-84 2 1800 B 45 2 CNG-104 3 1800 B 106 2 CNG-104 3 3600 B 330 3 CNG-52 2 3600 C 147 3 CNG-62 3 3600 C 243 3 CNG-74 2 1800 B 95 3 CNG-84 2 1800 B 145 3 CNG-104 3 1800 B 208 4 CNG-84 3 1800 B 235 4 CNG-104 4 1800 C 326 6 CNG-84 4 1800 C 325 6 CNG-104 4 1800 B 553 6 CNGL-104 4 1800 B 360 8 CNG-104 5 1800 B 550

Dresser Pump, Dresser Industries, Inc, Chesapeake, VA.




TYPE CNG

Supersedes

October 1975

HOW TO DETERMINE LOAD SHAFT DEFLECTION & BEARING LIFE

LOAD (a) Consult reference data chart and for specific pump involved: note the frame size, radial curve, shut-

off radial load and design rotative speed.

(b) Determine operating capacity of the selected pump in percent of best efficiency capacity. (Note that pumps above

3 in. size are not expected to be operated at less than 45-50% of their best efficiency capacity point.)

(c) Determine the percent of the shut-off radial load from the radial load curve.

(d) Multiply the percent of the shut-off radial load by the shut-off radial load.

• (e) When using cut-down impeller and/or operating at other than design rpm of pump, correct radial load by

multiplying by the 4th power of the ratio of cut-down to maximum impeller diameters and by multiplying by

the square of the ratio of operating to design rotative speed.

(f) Multiply radial load by specific gravity.

SHAFT DEFLECTION

Enter shaft deflection chart with resultant radial load and determine shaft deflection for specific frame size

pump (Maximum acceptable deflection .002 inch at seal faces.)

LINE BEARING LIFE

Enter line bearing life chart with resultant radial load and pump frame size and determine line bearing life.

(minimum acceptable life 16,000 hours).

THRUST BEARING LIFE

Enter thrust bearing life chart with resultant radial load and pump frame size and determine thrust bearing

life (minimum acceptable life 16,000 hours).



Shaft Deflection an Bearing Life Data

Supersedes END SUCTION CENTRIFUGAL PUMPS

October 1975

TYPE CNG

EXAMPLE: Conditions of Service 98% H2SO4 Sp. Gr. = 1.98 300 gpm at 114 feet Suction Pressure = 80 psi

For these C.O.S. select a 3 CNG-52 operating at 3500 rpm.

(1) From the " Ref erence Data" chart find that the 3 CNG-52 is a Frame 2 pump with a design speed of 3600 rpm. The radial load reference curve is C, and the radial load at shut-off is 147 pounds.

(2) The operating capacity as a percent of the best efficiency capacity is 300/423 = 71%

(3) From the radial load curve find that the radial load equals 38% of the shut-off radial load.

(4) The radial load, then, equals 147 x .38 = 56 lb. This is, however, for maximum diameter impeller and a gravity of 1.0.

(5) The C.O.S. requires only a 5 1/2 in. impeller whereas the maximum diameter is 5 5/8 in. The gravity involved is 1.98 instead of 1.0.

(a) 5.500 / 5.625 = .98 (.98)4th =.924 = correction for diameter

(b) 1.28 = correction for gravity Corrected Radial load = 56 x .924 x 1.98 = 102 lb.

(6) From Shaft Deflection Curves determine: Deflection at impeller = .00390 in. Deflection at seal face = .00195 iri.

(7) From Line Bearing Life Curves Determine Line Bearing life of 65,000 hours

(8) From Thrust Bearing Life Curves Determine Thrust Bearing life of 64,500 hours

Similarly, for the same pump at 1750 rpm with C.O.S. of H2SO4, Sp. Gr. 1.98, 153 gpm at 27 ft. suction pressure 80 psi, following values are obtained:

Impeller diameter 5 1/2 in. Load 26 poumds Deflection at impeller .0010 in. Deflection at seal faces .0005 in. Line bearing life = over 300,000 hours Thrust bearing life = 145,000 hours

Note the tremendous increase in line bearing life and reduced deflection at seal face. This points out the relationship between radial load and rotative speed. If rotative speed is reduced by one-half, the radial load is reduced by three quarters, thus reducing shaft deflection and increasing line bearing life. A reduction in rotative speed also increases line and thrust bearing life.


100

R AD

IAL

LOA

D -

% O

F SH

UT

-OF F

LO

AD

80

60

20

SHAFT DE

FLEC

TION

AT I

MPELLER -

INCH

ES

.001

.002

.003

.004

.005

.006

.007

I 00 .o 200 303 400 500 600

.0035

.003

.0025

.002

YI

.0015

.001

.0005

2004-3 Page 4

January 1990

END SUCTION CENTRIFUGAL PUMPS Supersedes

October 1975 Issue


TYPE CNG

Typical FADIAL REACTION Load Cones

D

i i

1 I

4 . \'‘

20

60 80 100 120

PUMP CAPACITY - % BEST EFFICIENCY POINT

SHAFT DEFLECTION CURVES

RADIAL LOAD AT IMPELLER - POUNDS

Dresser Pump, Dresser Industries 1 nc., Chesapeake, VA Printed in U.S.A.

LINE

BE

AR

ING

LI F

E -

TH

OU

SAN

D

40 60 80 100 200 300 400

300

200

FRAI14E - I

4

320

100

80

60

40

30

20

10

8

6

LINE

BE

AR

ING

LIF

E -T

HO

US

AN

D H

OU

RS

3 50 100 150 200 300 400 600 800 1000

300

C■1 200 N- O) CO

cr, 100

• 80

• 60

• 40

0 x 30

LI 20 u.

EE 10

• 8

6

4

3

o oo oo I o

!-

\ \

FRAM E 2A

Supersedes END SUCTION CENTRIFUGAL PUMPS October 1975 Issue

2004-3 Page 5

January 1990

TYPE CNG Shaft Deflections and

Bearing Life Data

8 °

FiLcg

RADIAL LOAD AT IMPELLER - POUNDS RADIAL LOAD AT IMPELLER- POUNDS

o 60

(n o 40

- 30

20

1 200 300 400

0 0 0 t 0 0

09

4.1

0 9

11

0 0

\ \ \

kk RA E 5 IIMPLIME

MIFRAME 4 InimiL

FRAME 4A MIMI 111

)0 200 300 500 _-_ 800 — .--- 1500

300

200

4

3 20 40 60 80 100

ro co

1 LIU RADIAL LOAD AT IMPELLER -POUNDS

RADIAL LOAD AT IMPELLER- POUNDS

Dresser Pump, Dresser Industries Inc., Chesapeake, VA

300

BE

AR

ING

LIF

E -

TH

OU

SA

ND

HO

UR

S

40

30

20

0

30

20

10 8

6

.1— 4

3

2

2004-3 Page 6

January 1990

END SUCTION CENTRIFUGAL PUMPS Supersedes October 1975 Issue


TYPE CNG

THRUST BEARING LIFE CURVES

2 11 „FRAME ILL\

11111■11■ 050

11121

G

O1

1 FRAME 1

10 20 30 40 60 80 100

200 300 400

SUCTION PRE SSURE P

60 80 100

\ \ FRAM 4

s s

)

0,0

po

)

f 7 )

FRAME ) 3

\

\)

/

/

10 20 30 40 60 80 100

200 300 400

SUCTION PRESSURE P. S.1.

0

0 300

1 1+.1 200

▪ 100 ta

▪

.1 80

60

40

30

20

200 300 300

200

100

80

0

40

30

20

0

0

400

300

200

100

80

60

40

TH

RU

ST

BE

AR

ING

LI F

E - T

HO

US

AN

D

30

20

FR A ME 5

I 0 10 20 30 40 60 80 100 200 300 400

SUCTION PRESSURE PS.I.

Dresser Pump, Dresser I ndustries I nc., Chesapeake, VA Printed in U.S.A.

30 0

250

PR

ES

SU

RE

200

150

S U

C T

ION

10 0

50

2004-3 Page 7

January 1990

TYPE CNG Max. Suction Pressure

MAXIMUM SUCTION PRESSURE LIMITATIONS

The limitations on suction pressure for CNG pumps are dependent upon:

(1) the thrust bearing life due to axial load, and

(2) the method of stuffing box sealing.*

The curve below is based on a minimum rated thrust bearing life of 16,000 hours. The curve also includes an average valve for radial load. It determines the maximum suction pressure in psig which varies with rpm and frame size.

...,...

FR4 A4E

..,

ro -440- i

0911

0 in a. —

o in .._ r-

0 0

NI

0 0 re)

1000 2000

3 000 SHAFT SPEED RPM

ALLOWABLE SUC TION PRESSURE VS. PUMP SPEED FOR BEARING. FRAMES WITH NORMAL RADIAL REACTION

ALLOWABLE SUCTION PRESSURE VS. PUMP SPEED

FOR CNG BEARING FRAMES WITH

NORMAL RADIAL REACTION

For example: a 4 CNG-104 pump (frame 4), at 1150 rpm has a maximum allowable suction pressure of 285 psig. At 1750 rpm, the maximum allowable suction pressure is 275 psig.

The sum of the suction pressure and differential pressure should never exceed the maximum aHowable working pressure of the pumps.

*See expeller option selection chart 2004-8 page 10 for limitations

4000

A-8378


Dresser Pump, Dresser I ndustries Inc., Chesapeake, VA


TYPE CNG


Supersedes

October 1975

TYPE CNG

MAXIMUM SUCTION PRESSURE

Using the maximum allowable suction pressure obained from the chart based on bearing life, a proper shaft sealing method must also be selected. The chart below indicates the maximum allowable suction pressure for the most common methods of shaft sealing.

Stuffing Box Sealing Method *Maximum Allowable Stuffing Box

Pressure (Normally Suction Pressure)

Standard Packed Box or Water Cooled Box (with or without flushing gland)

50 psig

Crane Type 9 Mechanical Seal 150 psig

Expeller (see chart)

*Always check the suction pressure limition due to thrust bearing load and the working pressure limitation.

MAXIMUM WORKING PRESSURE

The maximum working pressure of any pump is determined by the physical strength of the casing material, casing thickness and the method of bolting and gasketing the suction head joint.

Alloy casings have very high bursting pressures, and therefore the limitation is primarily due to the number of bolts used, strength of the bolts, method of gasketing, and the gasketing material at the suction head joint.

The maximum working pressure for standard CNG pumps as supplied by the factory is 150 psi. The hydrostatic test pressure is 300 psi.

MAXIMUM TEMPERATURE

The maximum temperature of the liquid pumped by CNG pumps depends upon the conduction of heat along the shaft to the bearings, the characteristics of the liquid being pumped, the method of stuffing box sealing and the strength of the pump casing material.

Care must be taken when selecting pumps and the method of stuffing box sealing on high temperature applications since the properties of the liquid being pumped greatly affect the selection. For example, liquids such as water, which have very high vapor pressures at high temperatures, also have non-lubricating qualities and therefore are not suitable for standard mechanical seals. The high pressure necessary to keep these liquids in a liquid state also places a definite limitation on which pumps and methods of sealing are suitable.

Stuffing Box Sealing Maximum Temperature Degrees Farenheit

Standard Packed Box 1) With internal seal passage, or no

liquid to seal cage. 1) 250

2) With cold liquid to seal cage 2) 275

John Crane Type 9 300

Consult Chesapeake for recommendations on all applications where the above limitations are exceeded.


END SUCTION CENTRIFUGAL PUMPS Supersedes

February 1979


GENERAL DATA TYPE CNG

PUMP SIZE

FRAME SIZE

SUCTION SIZE

DISCHARGE SIZE

CASING THICKNESS*

3/4 CNG-42

0

10

10.1

01

C\1

0.1

01

010

.10

.10I

NCO

C\IN

C001

et V

- d

' V"

LO

1 3/4 5/16 3/4 CNGE-42 1 3/4 5/16 1 CNG-32 1 1/2 1 5/16 1 CNG-42 1 1/2 1 5/16 1 CNG-52 1 1/2 1 5/16 1 CNG-64 1 1/2 1 5/16 1 CNG-62 1 1/2 1 11/32 1 1/2 CNG-52 2 1 1/2 5/16 1 1/2 CNG-62 2 1 1/2 11/32 1 1/2 CNG-74 2 1 1/2 11/32 1 1/2 CNG-84 2 1 1/2 3/8 1 1/2 CNG-104 2 1 1/2 3/8 2 CNG-52 3 2 5/16 2 CNG-62 3 2 13/32 2 CNG-74 3 2 3/8 2 CNG-84 3 2 3/8 2 CNG-104 3 2 3/8 3 CNG-52 4 3 11/32 3 CNG-62 4 3 13/32 3 CNG-74 4 3 3/8 3 CNG-84 4 3 3/8 3 CNG-104 4 3 3/8 4 CNG-84 6 4 3/8 4 CNG-104 6 4 3/8 6 CNG-84 6 6 3/8 6 CNG-104 6 6 3/8 6 CNGL-104 8 6 3/8 8 CNG-104 10 8 1/2

NOTES: 1. Maximum working pressure for all sizes listed above is 150 psi.

2. Hydrostatic test pressure for all sizes listed above is 300 psi.

3. Corrosion allowance is 1/8 in. minimum.

* Casing thickness subject to foumdry tolerance of 1/16 in. These thicknesses may be used in proposals. Where actual casing

thickness must be recorded, include extra price for casing thickness drawing.



TYPE CNG


GENERAL DATA

Supersedes

October 1975

FRAME

SIZE

SHAFT DIAMETER SIZE OF KEYWAY

AT COUPLING

IMPELLER

OVERHANG

BEARING

SPAN

SKF BEARING SYMBOLS

STUFFING BOX RINGS PER BOX SIZE

OF PACKING

DIA.

OF BORE

DEPTH

OF BOX

AT IMPELLER

AT STUFFING

BOX BETWEEN BEARINGS

AT COUPLING LINE THRUST

WITH SEAL CAGE

W/O SEAL CAGE

1 9/16 15/16 1 1/8 5/8 3/16x3/32 5 1/2 3 7/8 6205 6304 NR

4 5 5/16 1 9/16 1 3/4

2 7/8 1 3/8 1 9/16 1 1/4x1/8 7 1/2 5 6207 6306 N R

5 7 5/16 2 2 5/16

3 1 1/8 1 3/4 2 3/16 1 3/8 3/8x3/16 9 1/2 8 1/8 6309 6309 NR

6 8 3/8 2 1/2 3 3/16

4 1 3/8 2 1/8 2 3/8 1 3/8 3/8x3/16 11 8 1/2 6311 7308 6 8 7/16 3 3 5/8

5 2 1/8 2 3/4* 2 3/4 2 1/8 1/2x1/4 11 8 2313 7312 B G

5 7 1/2 3 3/4 3 11/16

" 0. D. of sleeve. Diameter under sleeve is 2 1/2 in.

MATERIALS OF CONSTRUCTION

PART MATERIAL

CASING CN7M

SUCTION HEAD CN7M

IMPELLER CN7M

SHAFT CN7M

GLAND CN7M

EXPELLER (optional) CD4MCU

STUFFING BOX (expeller option) CD4MCU

FRAME CAST IRON

PACKING GRAPHITE IMPREGNATED TEFLON

SEAL CAGE TEFLON

O'RING VITON

SHAFT SLINGER NEOPRENE

CASING GASKET DURABLA

IMPELLER NUT CN7M

IMPELLER NUT WASHER CN7M



MECHANICAL SEALS

2004-3 Page 11 February 1990

TYPE CNG

John Crane Type 9 Seal Durametallic Rott Seal


1. Stationary Seat Type 20 Stainless w/Ceramic Facing

2. Gland 316 Stainless Steel

3. Wedge Teflon

4. Seal Washer Carbon

5. Retainer 316 Stainless Steel

6. Set Screw (not shown) 316 Stainless Steel

7. Springs 316 Stainless Steel

8. Disc 316 Stainless Steel

9. Snap Ring 316 Stainless Steel

10. Recirculation Piping (not shown) 316 Stainless Steel

Parts No. 3, 4, 5, 6, 7, 8 and 9 taken as a group constitute the rotor unit.

Dresser Pump, Dresser Industries, Inc., Chesapeake, VA

CENTRIFUGAL PUMPS 2004-3 Page 12 February 1990

MECHANICAL SEALS

Supersedes

October 1975 Issue

TYPE CNG

Limitations

1. Pressure must not exceed 150 psig on an internally mounted type 9 seal. Pressure limitations of a type 9B internal mechanical seal exceed those of the pump.

2. Temperature of liquid being pumped must not exceed 300F.

3. Do not offer these seals on liquids being pumped above their atmospheric boiling point without referring to Chesapeake.

4. Do not use these seals on hydrocarbons with a specific gravity of 0.63 or less.

5. Do not use these seals where fine solids or crystals are present in the liquid being pumped.

6. Do not apply these seals where the corrosion rate on the metal selected is greater than 0.002 inches per year (IPY). If in doubt, consult the marketing department.

In addition these seals should not be used under the following conditions:

A. Flourine compounds, or hydrofluosilicic acid. B. Solutions containing caustic soda. C. Nitric acid over 45% concentration. D. Chromic acid over 25% concentration. E. Oleum (100% or more sulfuric acid). F. Hydrogen peroxide over 15% concentration.

For solutions which will not corrode the metal selected at a rate greater than 0.002 IPY, but which are listed in one of the exceptions "B" through "F" above, an optional seal can be supplied which is recommended by the seal manufacturer for the specific application. Consult your local seal representative or the marketing department.

Dresser Pump, Dresser Industries, Inc., Chesapeake, VA.

2004-PS-22

CENTRIFUGAL PUMPS "W" frame modification Water-flooded stuffing box

iv 6ruJ

WORTH I NGTON

20,20023

2:F•20029

MAINTAIN POSITIVE SEAL ON VACUUM SERVICES • REDUCE CORROSION PROBLEMS

• VACUUM SERVICES such as black liquor evaporators and hotwells: The flooded shaft modification provides a posi-tive seal thus insuring against loss of system vacuum. Black liquor foaming, associated with air inleakage, is elimi-nated. Visual observation of the water level in the cavity provides an instant indication of packing condition.

• CORROSIVE SERVICE: The flooded shaft construction provides for continuous circulation of clean fluid around the shaft and stuffing box. Any corrosive leakage is diluted and carried away through the 34 in. overflow. The overflow can be piped directly to the plant central drainage system further reducing corrosion problems on bearing frames, baseplates, concrete work, etc.

A TRULY "CUSTOMIZED"* PUMP AT STANDARD PRICES

The "W" frame modification is an integral part of Wor-thington's "customized" line of Standard End-Suction Centrifugal pumps. This line standardizes on parts, not pumps, so we can literally "custom-build" your pump at standard prices. Parts standardization gives maximum flexibility in meeting special requirements in coverage, corrosion resistance and sealing methods with minimum design changes and expense. The standard bearing frame has been modified to pro-vide a water-retaining cavity surrounding the stuffing box. The frame retains the rigid construction, low shaft deflection characteristics of the standard SESC frame. Standard shafts, bearings, etc. are used. A special line bearing cover contains dual stainless steel and rubber closures to preclude entry of the water into the bearings. A drain is provided between these two seals to channel condensation away. As further protection, these pumps are provided only with oil lubrication as standard. Standard CNG-CNF-CNFE-CNE-CNR elevations and rat-ing curves may be used when applying these pumps. The following features are included to assure you maximum pump dependability and economy.

TROUBLE-FREE MAINTENANCE is assured through the modern production control system, procedures and equip-ment used in machining. For example, the minimum tolerances on fit, recommended by bearing manufac-turers, are cut in half when we machine pumps. If a

.CUSTOMIZED—to build to a customer's requirements from standard parts.

minimum of .0010 is specified, we require .0005. Qualit control is an absolute at Worthington.

FRAME is constructed of heavy cast iron with the casing mounting ring cast integrally. This ring is rabbeted for further accuracy of alignment. Highly accurate machin-ing techniques insure required alignment between bear-ing bore and casing mounting fit.

BEARINGS are anti-friction ball bearings consen atively sized to take the thrust and radial loads encountered. They are standard bearings and are designed for a mini-mum average life of 10 years.

BEARING PROTECTION is provided by a system of covers and lip seals which prevent contaminants from reaching and entering bearings.

SHAFT is ground on all critical surfaces. It is designed to transmit the power required to the impeller and to withstand radial loads with minimum deflection. On all pumps up to 500 gpm design capacity, the force on the shaft under worst conditions causes less than .002 inch deflection at the stuffing box face. Larger pumps have proportionally lower deflections.

AVAILABILITY

CAPABILITY Sizes 1" to 6"

Capacities to 2600 Gpm 88 Liquid Ends

Heads to 450 Feet 3 Bearing Frames

Temperatures to 350 F

Typical liquid end outline shown. Screwed connections are available in some sizes.

• Standard CING-C.NF-CNFE-CNE-CNR liquid end and rotating parts

• Self-locking (acorn-type) impeller nut

• Dual stainless steel and rubber closures; in. tubing drain

• Oversized rugged shaft

• Impeller keyed to shaft

• Positive alignment bv rabbeted fit

• Choice of open or closed impeller. hy-draulically balanced

• 3 in. overflow connection

• Long bearing life

• Oil lubrication standard

• Box-type rugged cast-iron frame

• Heavy sections

• One-piece packing gland

POSITIVE LINE BEARING PROTECTION

• Dual stainless steel and rubber closures pre-clude liquid entry into bearings.

• 3 6 in. OD tubing drains condensation from between closures.

• Oil lubrication provides further protection to the bearing.


For Materials of Construction and Liquid End Detail see Specific Bulletins:

WORTHITE® Centrifugal Chemical Pumps 2004-B3 Open Impeller Pumps 2004-B4 End-Suction Centrifugal Pumps with Closed Impellers 9 004-B5

Self-Priming Centrifugal Pumps 2004-B2

0 WORTHITE is a registered trademark of Worthington Corporation.

Worthington Corporation

Pump and Heat Transfer Division

Standard Pump Sales Department

East Orange, New Jersey WORTH I NGTON

2004-PS-22 681orc

Litho in U.S.A. Supersedes G-3336

Documents

END SUCTION CENTRIFUGAL PUMPS 2004-3 Page 1...The shaft of a centrifugal pump, in addition to radial forces, must also transmit the torque from the driver to the impeller. The rating