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3 & 4
Manual Directional Control Valves

Williams valves are available in double-acting (4-way) or single-acting (3-way) versions. These valves are machined from a solid casting for high-pressure operation. All valves feature ground and chrome-plated spools that are fitted to the bodies by honing. All spools are pressure-balanced for smooth, positive valve actuation. Optional externally-adjustable relief valves are available for working pressures up to 5,000 psig (345 bar). Spool control is three-position spring-centered. Valves may be used in series operation. Flow rating is 6 gpm (22.7 lpm). Port size is 3/8 inch NPT (SAE ORB ports are available upon request). Various spool configurations are available.

Parts List / Diagram Installation &
Replacement Instructions
Directional Control Valve Options

No. 3 Control Valve
(3-Way Single Acting)
Drg.
No.
Part
No.
NO.
Req.
Part Description Price (USD)
1 Casting Valve (Not Sold Separately)
2 Spool, Valve (Not Sold Separately)
3 1020 2 Key,Spool Stop $2.74
4 1021 1 Spring, Spool Centering $3.29
5 1022 1 Key,Spool Stop 3/4" $9.70
6 1035 3 Cap, Screws $2.32
7 1030 4 Washer $2.32
8 1096 1 Gasket $2.64
9 1105 1 Pipe, Oil Return $4.08
10 1094 1 Lever, Control $8.07
11 1102 1 E-Ring $2.33
12 1139 1 Pipe, Oil Return $3.60

Directional Control Valve Options

These Control Valves are identified in the Pump Unit Model Numbers as

(4) - (4C) - (4R)

The highest working pressure is regulated by the Relief Valve that is located within the pump. The C and R Relief Cartridges are set at lower pressures, and control only parts of the system.

No. 4 Control Valve
(4-Way Double Acting)
Drg.
No.
Part
No.
NO.
Req.
Part Description Price (USD)
1 Casting (Not Sold Separately)
2 Spool (Not Sold Separately)
3 1020 2 Key,Spool Stop $2.74
4 1021 1 Spring, Spool Centering $3.29
5 1022 1 Key,Spool Stop 3/4" $9.70
6 1035 3 Cap, Screws $2.32
7 1030 4 Washer $2.32
8 1096 1 Gasket $2.64
9 1105 1 Pipe, Oil Return $4.08
10 1094 1 Lever, Control $8.07
11 1102 1 E-Ring $2.33
12 1101 1 Relief Cartridge $18.03
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Monticello, IA 52310-9472
USA
(319) 465-3537
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