Williams WM640A Surface Mount Treadle Valve

Unlike other treadle valves which are mounted through the floor, the WM640A treadle valve is secured to the floor surface. This treadle valve incorporates a three-way, compensating valve subassembly that can be rotated 360 degrees for plumbing convenience. The valve subassembly regulates air pressure to the brake chambers in relation to the position of the pedal.

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