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Custom Hydraulic Cylinders and Valves

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Direct Mount Pumps

GP900 & GP1500 Series

The GP1500 and GP900 series are high performance unirotational gear pumps using a through bore bushing type design constructed of high strength aluminum housings and cast iron end covers. Each unit has optional rear porting GPR or side porting GPS as standard and are available in either clockwise or counter-clockwise rotation.

The GP1500 Series of gear pumps covers the range of 1.41 cubic inches/rev to 2.40 cubic inches/rev at pressure ratings to 4000 psig (275 bar) and speeds to 3000 rpm. These units are available with SAE B 2-bolt mounting flange and 13-tooth spline shafts.

The GP900 Series of gear pumps cover the range of 0.71 cubic inches/rev (8cc/rev) to 1.20 cubic inches/rev at pressure ratings to 4000 psig and speeds to 3000 rpm. These units are available with SAE A 2-bolt mounting flange and 9-tooth spline shafts.

Installation Guide – GP900 & GP1500 series pump

Shop GP900 & GP1500 Series Pump Options

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Part Number
Current Stamp p/n
Old Stamp Williams p/n
Old Vendor Stamp p/n
Port Location
Rotation
Max Operating Pressure (PSI)
Max Speed (RPM)
Displacement (in3/rev)
Flow @ 1000 RPM (GPM)
Spline Shaft
Price
Qty
Add To Cart
GPR911CCW
3234
2276
1800657
REAR
Counter-Clockwise
4000
3000
0.68
3
5/8″ 9-Tooth
$373.04
Max:
Min: 1
Step: 1
Add To Cart
GPR911CW
3234
2276
1800657
REAR
Clockwise
4000
3000
0.68
3
5/8″ 9-Tooth
$422.75
Max:
Min: 1
Step: 1
Add To Cart
GPR916CCW
3236
2282
1800663
REAR
Counter-Clockwise
4000
3000
1.03
4
5/8″ 9-Tooth
$336.33
Max:
Min: 1
Step: 1
Add To Cart
GPR916CW
3236
2282
1800663
REAR
Clockwise
4000
3000
1.03
4
5/8″ 9-Tooth
$380.17
Max:
Min: 1
Step: 1
Add To Cart
GPS916CCW
3237
2282
1800663
SIDE
Counter-Clockwise
4000
3000
1.03
4
5/8″ 9-Tooth
$315.97
Max:
Min: 1
Step: 1
Add To Cart
GPS916CW
3237
2282
1800663
SIDE
Clockwise
4000
3000
1.03
4
5/8″ 9-Tooth
$365.66
Max:
Min: 1
Step: 1
Add To Cart
GPR919CCW
3238
2284
1800665
REAR
Counter-Clockwise
4000
3000
1.16
5
5/8″ 9-Tooth
$367.93
Max:
Min: 1
Step: 1
Add To Cart
GPR919CW
3238
2284
1800665
REAR
Clockwise
4000
3000
1.16
5
5/8″ 9-Tooth
$416.35
Max:
Min: 1
Step: 1
Add To Cart
GPR1523CCW
3240
2288
1830193
REAR
Counter-Clockwise (Only)
4000
3000
1.41
6
7/8″ 13-Tooth
$459.60
Max:
Min: 1
Step: 1
Add To Cart
GPR1534CCW
3242
2294
1830199
REAR
Counter-Clockwise
4000
3000
2.11
8
7/8″ 13-Tooth
$683.35
Max:
Min: 1
Step: 1
Add To Cart
GPR1534CW
3242
2294
1830199
REAR
Clockwise
4000
3000
2.11
8
7/8″ 13-Tooth
$732.95
Max:
Min: 1
Step: 1
Add To Cart
GPR1538CCW
3244
2296
1830201
REAR
Counter-Clockwise
4000
3000
2.40
9
7/8″ 13-Tooth
$682.74
Max:
Min: 1
Step: 1
Add To Cart
GPR1538CW
3244
2296
1830201
REAR
Clockwise
4000
3000
2.40
9
7/8″ 13-Tooth
$677.12
Max:
Min: 1
Step: 1
Add To Cart
GPS1538CCW
3245
2296
1830201
SIDE
Counter-Clockwise
4000
3000
2.40
9
7/8″ 13-Tooth
$726.66
Max:
Min: 1
Step: 1
Add To Cart

Bi-Rotational Pumps

The Bi-Rotational series are high performance gear pumps with cast iron housing and end cover construction. Each unit has optional rear porting and side porting as standard. They cover the range of 1.97 cubic inches/rev to 2.96 cubic inches/rev at pressure ratings to 4000 psig and speeds to 2500 rpm. These units are available with SAE B 2-bolt mounting flange and 13-tooth spline shafts.

More information

Bi-Rotational Pump Installation Guidelines

Shop Bi-Rotational Direct Mount Gear Pump Options

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Part Number
Current Stamp p/n
Port Location
Rotation
Max Operation Pressure (PSI)
Max Speed (RPM)
Displacement (in3/rev)
Flow @ 1000 RPM (GPM)
Spline Shaft
Price
Qty
Add To Cart
GP2041
2429
REAR & SIDE
Bi-Rotational
4000
2500
2.96
11
7/8″ 13-Tooth
$728.06
Max:
Min: 1
Step: 1
Add To Cart
GP2025
2427
REAR & SIDE
Bi-Rotational
4000
2500
1.97
6.5
7/8″ 13-Tooth
$599.11
Max:
Min: 1
Step: 1
Add To Cart

Shop Bi-Rotational Direct Mount Piston Pump Options

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Part Number
Rotation
Max Operating Pressure (PSI)
Max. Speed – RPM
Displacement (in3/rev)
Flow @ 1000 RPM (GPM)
Spline Shaft
Price
Qty
Add To Cart
DPF98-1BPB
Bi-Rotational
5000
1300
2.59
9.5
7/8″ 13-Tooth
$1,263.27
Max:
Min: 1
Step: 1
Add To Cart
DPH98-1BPB
Bi-Rotational
5000
1300
3.39
12.8
7/8″ 13-Tooth
$1,440.40
Max:
Min: 1
Step: 1
Add To Cart

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Monticello, IA 52310-9472
USA

(319) 465-3537

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