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Williams Model 20 Pump

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20 and 40 Model Pumps

The Williams Machine and Tool Model 20 pump is ideal for applications requiring a pump in an efficient, neat package. These units are rugged and heavy duty. Features include:

  • Flow - 1.8 GPM (6.8 LPM) @ 1000 RPM
  • Displacement/Revolution - 0.45 cubic inches (7.4cc)
  • Maximum Pressure - 3500 PSIG (240 bar)
  • Drive speed range - 300 to 1000 RPM
  • Maximum drive speed - 1000 RPM
  • Rotation - Bi-Rotational
  • Input Shaft - 1" (2.54mm), keyed

Notes: No changes are needed when changing pump rotation. All Williams Machine and Tool pumps use the same 6 hole mounting pattern.
Model 20 Pump Parts List


Directional Control Valve Options
Model 20 Pump Parts List
Drg.
No.
Part
No.
NO.
Req.
Part Description Price (USD)
1433 Seal Kit $21.38
1 1028 2 Oil Seal $2.74
2 1012 1 Pump Gasket $3.75
3 1030 6 Aluminum Washer $2.55
1430 Shaft and Bearing Kit $102.49
5 1002 1 Shaft $50.86
6 1023 2 Needle Bearing $13.65
7 29466A 1 Spirolox Ring $6.07
8 1004 2 Eccentrics $15.09
9 1026 2 Key, Eccentric $3.21
10 1055 3 Nylon Thrust Washer $2.59
11 1027 1 Key $3.69
1431 Piston and Connecting Rod Kit $45.41
12 1006 2 Piston and Rod Assembly $24.34
1432 Intake and Exhaust Valve Kit $23.07
13 1043 4 Seal $2.76
14 1015 4 Ball $2.79
15 1041 2 Cage Spring $2.56
16 2264 2 Exhaust Spring $2.55
17 1016 2 Intake Spring $3.30
18 1009 4 Washer $2.93
19 1008 4 Port Stud $2.99
Remaining Pump Parts
20 1035 6 Cap Screw $2.55
21 Pump Casting (Not Sold Seperately)
22 1664 1 Intake Pipe $11.34
24 2664 1 Intake Screen $7.46
25 1033 1 Rear Bearing Housing $10.63
26 1040 1 Housing Set Screw and Nut $2.67
27 1060 1 Relief Valve $12.15

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204 Plastic Lane
Monticello, IA 52310-9472
USA
(319) 465-3537
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