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. For technical specifications please see below.
Specifications:
• Air Inlet - 1/4" Female NPT Pipe Threads • Unloader Size: 1/4" Compression • Equipped with a Manual On and Off Lever • Pressure Setting: Turns on at 145 PSI and Shuts off at 175 PSI. (Can be adjusted slightly)
Power and Amp Rating:
• 20 Amps MAX at 120 Volt • 12 Amps MAX at 240 Volt Single Phase • 9.6 Amps MAX at 240 Volt 3 Phase
12 Volt Power DC
• 8.6 AMPS at 32 Volts DC, • 3.1 AMPS at 120 Volt DC • 1.6 AMPS at 240 Volt DC
If you have a larger industrial compressor with a magnetic starter, the amps do not matter. All the switch is doing is telling the starter when to Turn on and Shut Off.
