Single Port Air Compressor Pressure Switch Control Valve 145-175 PSI w/ Unloader
145-175 PSI air compressor pressure switch or known as a pressure control valve. This switch has one port on the bottom for air inlet hook up, which is 1/4″ female NPT. This switch is also equipped with an on and off lever and an unloader valve on the side, which is 1/4″ compression if the unloader is not needed it does not need to be hooked up. This has a 1/4″ Female NPT Pipe threads which can be changed to male using a pipe nipple from a local hardware store.
Single Port Air Compressor Pressure Switch Control Valve 145-175 PSI w/ Unloader
LEFOO 140-175 PSI air compressor pressure switch control valve with a single female NPT air inlet connection port. The switch listed is a universal replacement pressure switch that replaces brands such as Furnas, Square-D and more. This switch is equipped with an unloader valve, on / off lever, and a single 1/4″ female NPT air inlet port. ( Note: NPT measures about 3/4″ in diameter.) The unloader equipped on this switch is used to unload the air pressure off the head of the compressor when the compressor shuts off, this way when it starts there is no pressure on the piston and the compressor is able to start load free. This valve usually has a 1/4″ plastic or copper line that runs to the check valve or the head of the compressor.