Flowserve Twin Screw Rotary User Manual

Page 22

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TWIN SCREW PUMPS. ORIGINAL USER INSTRUCTIONS. ENGLISH. 71569243 – 07/10

Page 19 of 53

®

PUMP SIZE

NP24

MODEL INTERNAL

BEARING

EXTERNAL

BEARING

SHAFT/SCREW DESIGN

PINNED

INTEGRAL PINNED INTEGRAL

SUCTION SIZE (STD)

14” 150# FLANGED

DISCHARGE SIZE (STD)

12” 300# FLANGED

CLEARANCES (STD)

.51/.76 mm (.020/.030”)

PUMP

3855

(8500)

4536(10000)

WEIGHTS

KG(LBS)

ROT ELEMENT

1179 (2600)

1247 (2750)

MOMENT OF INERTIA (LBS/IN2)

23800

24900

SHAFT DIA @ COUPLING

92.1 mm (3.625”)

92.1 mm (3.625”)

SHAFT DIA @ ST BOX

95.3 mm (3.750”)

146.1 mm (5.750”)

BORE

120.7 mm (4.750”)

171.5 mm (6.750”)

STUFFING

BOX

DEPTH

120.7 mm (4.750”)

114.3 mm (4.500”)

NO OF STUFF BOXES

1

4

SIZE

12.7 mm (1/2)sq

12.7 mm (1/2)sq

PACKING

NO

OF

RINGS

8 28

TIMING GEAR HSG

N/A

N/A

21 L

21 L

APPROX.

OIL FILL

BEARING HSG SEE

NOTE 1

N/A

N/A

8.5 L

8.5 L

PUMP SIZE

NP18

MODEL INTERNAL

BEARING

EXTERNAL

BEARING

SHAFT/SCREW DESIGN

PINNED

INTEGRAL PINNED INTEGRAL

SUCTION SIZE (STD)

14” 150# FLANGED

DISCHARGE SIZE (STD)

12” 300# FLANGED

CLEARANCES (STD)

.51/.76 mm (.020/.030”)

PUMP

3629 (8000)

4309 (9500)

WEIGHTS

KG(LBS))

ROT ELEMENT

1111 (2450)

1168 (2575)

MOMENT OF INERTIA (LBS/IN2)

23150

24250

SHAFT DIA @ COUPLING

92.1 mm (3.625”)

92.1 mm (3.625”)

SHAFT DIA @ ST BOX

95.3 mm (3.750”)

146.1 mm (5.750”)

BORE

120.7 mm (4.750”)

171.5 mm (6.750”)

STUFFING

BOX

DEPTH

120.7 mm (4.750”)

114.3 mm (4.500”)

NO OF STUFF BOXES

1

4

SIZE

12.7 mm (1/2)sq

12.7 mm (1/2)sq

PACKING

NO

OF

RINGS

8 28

TIMING GEAR HSG

N/A

N/A

21 L

21 L

APPROX.

OIL FILL

BEARING HSG SEE

NOTE 1

N/A

N/A

8.5 L

8.5 L

Note 1. Depending on whether the pump is a front or rear timing gear style, the bearing housing may be on the

onboard or outboard side of the pump.

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