4 Port Pressure Switch 140 -175 PSI 16 Amp Lefoo LF19A-H4Brand new import style 140 175 PSI air compressor, pressure switch, control valve with a four port connection manifold. The switch listed is a universal replacement pressure switch that replaces import syle, Condor brand and more. This switch is equipped with an unloader valve, on off pressure control button, and a four port mounting manifold. The unloader equipped on this switch is used to unload the air pressure off the head of the compressor when