Pressure Switch, 3/8", OL50135 #05C831

Old Part Numbers: AB-9063132

Three 1/4" FPT side ports and one 3/8" FPT bottom port with pressure unloader on the bottom as well as power cord grommets.

Replace the pressure switch if the compressor no longer cuts in or cuts out at the designated pressure (PSI), if the unit doesn't turn on or off, or if there is an obvious air leak from the contacts or manifold.

If the small unloader (bleeder) valve on or under your switch leaks constantly AFTER the unit shuts off, the in-tank check valve is probably defective, not the pressure switch. Most pressure switches have a bleeder valve which has a 1/4" plastic or copper line routing to it.