WILLIAMS CONTROLS part description

The WM338 series valves are normally open, three-way relay valves that close and exhaust with sufficient control pressure. The WM338 series includes non-compensating relay valves and compensating pressure-limiting valves. The compensating models deliver as output pressure proportional to the control signal received. The control pressure required to close the WM338 valves varies with the different models in the series. Some models are equipped with an adjustment that changes the control pressure at which the valve closes; these models are factory pre-adjusted to close at a specific valve. The non-adjustable models will close at a fixed control pressure. Part Number: RELAY NO 112381 Manufactured by Brake Systems.

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A division of Curtiss-Wright Corporation, Williams Controls® specializes in aftermarket electronic, hydraulic, and pneumatic control solutions for commercial vehicles. Originally founded in 1937 to manufacture brake components for logging trucks, it has grown into one of the leading producers of control systems for the heavy duty vehicle market. It has also pioneered key products and technologies such as the pneumatic controls and electronic throttle controls for trucks and buses. Today, Williams Controls offers a comprehensive lineup of hand, joystick, throttle controls, adjustable pedal systems, handrest systems, and sensors for all commercial vehicles. All products are manufactured under a strict Quality and Environmental System and comply with ISO standards.

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