WILLIAMS CONTROLS part description

Description: The WM90DX valves are push rod actuated, self-relieving pressure modulators. All valves have a threaded stud at the neck for mounting and are equipped with a hex nut that requires a 1.5 inch wrench. Mounted in a 1.03 inch diameter hole, the WM90DX valve can be installed in material up to 1/4 inch thick. These valves are designed with special safety features for use in FMVSS-124 systems. If an internal mechanical failure occurs in the WM90DX valve, the outlet pressure is immediately released to the atmosphere. Operation: In the de-actuated position, the outlet pressure equals atmospheric pressure. Depressing the push rod closes the exhaust poppet and additional movement against the push rod unseats the inlet poppet. The output pressure rises to balance against an internal spring under the main piston. The main piston closes the inlet port to maintain the balanced condition. If the push rod is moved, a new balance point is established. As the push rod is fully released, the valve exhausts and returns to the rest position. Application: These valves are certified for throttle applications requiring compliance with FMVSS-124 when installed according to Williams Air Controls requirements. Ports: 1/4-18 NPTF. Maximum Operating Pressure: 150 PSI. Operating Temperature Range: -40°F to 200°F. Flow Rating: 35 SCFM @ 100 PSI. Actuation Force: 12 pounds minimum to open @ 100 PSI. 38 pounds maximum output @ 100 PSI. Mounting: 1.03 inch diameter hole. Materials: Zinc alloy body casting. Buna-N poppets, o-rings and u-cups

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.

Don't know your part number?

Take a photo and we'll identify it!

Recommended Products

More from WILLIAMS CONTROLS (Browse all)