Brand new Square D brand, Pumptrol Single Port air compressor pressure switch, model: 9013FHG42J59X 135-175 PSI with unloader control valve. This pressure switch is designed for a 2 stage air compressor pumping up to 175 PSI but can be adjusted anywhere from 100-200 PSI. The unloader is used to unload head pressure off the compressor pump for a load free start up. If your compressor does not require a unloader valve on the pressure switch you can leave it not hooked up and the switch will still function properly. This is an authentic Square D brand pressure switch, for more specifications see below.
• Brand: Square D Pumptrol
• Model: 9013FHG42J59X
• Number of Pressure Sensing Connection Ports: ONE 1/4" Female NPT (Note: 1/4" NPT Measures About 1/2" In Diameter)
• Unloader Connection Port: 1/4" Compression Which Accepts 1/4" Outside Diameter Copper Or High Pressure Tubing
• Preset On Pressure: 135 PSI
• Preset Off Pressure:175 PSI
• Differential: 40PSI
• Can Be Used With Single Or Three Phase
• Can Be Used With 110 - 575 Volts Depending On Amperage And Phase
• Good Up To 15 Amps Of Continuous Current.
(Note: If being used with a magnetic starter the amperage does not matter since all the main power is going through the starter not the pressure switch.)
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