Williams Controls WM-783 Williams Customer Specification Original Release: 09/82 Original Project: 119875 APPLICATIONS The WM783A is a versatile control valve with a variety of industrial and vehicular applications. WM783A valves are frequently used to control air operated relay valves, cylinders and power take off systems. OPERATION When the WM783 valve's control lever is in position 1 (refer to external configuration) outlet port 2 receives supply pressure and outlet 1 is exhausted. Both outlet ports are exhausted in position 2, which is the neutral or 'hold' position and in position 3, outlet port 1 receives supply pressure and outlet 2 is exhausted DESCRIPTION The WM738 series is composed of non-compensating four-way control valves with three functional positions. WM738 valves are available with two types of lever operation: WM783A1 models have a detent in each of the valve’s lever positions and WM783A models are equipped with a spring-loaded lockout safety device, which locks the control lever in each of the three positions to prevent unintentional movement.

WM-782 | Williams Customer Specification WM-782 | Williams Customer Specification

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