Rolair

Old Part Numbers: VT211001

Click here to view/download the wiring diagram.

This Pilot Valve has an Unloader port included, which vents the air when the unit reaches max PSI and "unloads" the pump, so that the air vents into the atmosphere. The knurled knob on top is turned...

Poor performance or air leaks out of the intake filter while the unit is running? The valve plate assembly is probably the problem.