WM147 - Normally-Open Non-Compensating Relay Valve
Product Brand: Williams Controls
A normally open, non-compensating relay valve.
The WM-147 is normally-open, non-compensating relay valve. Control pressure is used to close these normally-open valves; the required control pressure signal differs with each model. These relays are available either as two-way valves without an exhaust mode or as three-way valves if the exhaust mode is desired. A three-way model can be used in conjunction with a two-position control valve in applications where a four-way function is desired.