new (oem) 112711-150 quincy air compressor pilot unloader valve 112711-150 hity motor <br><b>part # 112711-150</b> <br><b>used with a copper pipe to pump</b> <br><b>this is an original equipment part, not an aftermarket.</b> <br><b>cuts in at 110psi and out at 125psi. has hand toggle unloader for easy starting.</b> <br><b>1/2" compression fitting from pump / 1/2" fpt to tank / 1/8" fpt for check valve </b> <br><b>factory preset, yet can be adjusted for higher or lower pressures. an easy fix. </b> <br><b>for pumps without head unloaders and tanks with check valves.</b>