Williams 119493 WM517A Lift Axle Control Panel

The WM517A panel is used to control pressurization of air springs on lift axles. The panel has two outlet ports. One delivers a regulated output and the other delivers full system pressure. The WM517A incorporates a two position, four-way directional control valve, a three-way pressure regulator and a gage. When the directional control valve's lever is in the up position, the panel's outlet delivers full system pressure to lift the axle off the road. When the control lever is down, the panel delivers regulated pressure to control the axle weight distribution. Regulated output is indicated on the gage and is proportional to the position of the regulator's control knob.

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