Replacement Air Compressor Control Switch Valve L4, 4 Ports 95-125 PSI PRESET 95-125 PSI L4 " COMPRESSION UNLOADER VALVE " FEMALE NPT TANK CONNECTION WITH 3 EXTRA 1/4" PORTS. MAX AMPS, 20 AMPS AT 120VOLT / 12 AMP AT 240 VOLT , AND 9.6 AMP AT 3PH 240 VOLT