Williams Relay Valve

WX338P:

Description: The WX338 series valves are normally open, three-way relay valves that close and exhaust with sufficient control pressure. The WX338P model is a non-compensating adjustable relay valve. 

Operation: When the WX338P valve is in the normally open position, air flows from the supply port to the outlet port. In response to a sufficient control control signal, the supply poppet seats and the valve closes. Pressure at the outlet port is exuasted to the atmosphere. THe valve re-opens when the control pressure drop below the necessary level.

Application: Commonly used in industrial and vehicular applications, these normally open inversion valves close with sufficient hydraulic or pneumatic control pressure. 

• Inlet/Outlet/Control Port Size: 1/4" NPT
• Maximum supply pressure: 150 psi
• Operating temperature: -20F to 150F
• Flow Rating Inlet to outlet: 60 SCFM @ 100 psi
• Flow Rating Outlet to Exhaust: 25 SCFM @ 100 psi
• Automatic application pressure: 25-40 psi

WX147L1:

Description: WX147L1 is a normally closed three-way directional relay valve. A pilot pressure of 35-45 psi must be applied to the control port before the valve will open to allow supply pressure to flow to its outlet. The WX147BC will close and exhaust down-stream pressure to atmosphere when the pressure at its control port descends below the desired level.

WX147BC:

Description: WX147BC is a normally closed three-way directional relay valve. A pilot pressure of 65-85 psi must be applied to the control port before the valve will open to allow supply pressure to flow to its outlet. The WX147BC will close and exhaust down-stream pressure to atmosphere when the pressure at its control port descends to 65-50 psi.

WX147L1 & WX147BC Specifications:

• Inlet/Outlet/Control Port Size: 1/4" NPT
• Exhaust Port Size: 1/8" NPT
• Maximum supply pressure: 150 psi
• Operating temperature: -20F to 200F
• Flow Rating: 35 SCFM @ 100 psi

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