Size: 50.25 cubic inches Pressure Switch Specifications 1/4" NPT female port; 1/4" compression flush valve connection; Pressure adjustment: 90-125psi; 90psi cut-off pressure; 125Psi cut-off pressure; 30-40psi pressure difference; Amplifier rating (1 phase) 20. amps-120amps-120amps-120amps-120amps-120amps-120amps-120amps-120amps-120amps-120amps-120V AC/12 Amps-40V AC; 3 Phase: 9.6 Ampere-240V AC Durable & Sturdy Air Compressor Pressure Switch The pressure switch is made of high quality steel and plastic, thermoplastic finish, features 26A heavy duty contacts, ensures longer service life and usability; durable and reliable to use Perfect Air Compressor Pressure Switch The air compressor pressure control switch is diaphragm actuated; the air compressor pressure switch monitors the pressure of compressed air entering and exiting the air tank, helps maintain a proper level of pressure inside a compressor. Ensures system stability and prevents overcharging and energy waste EASY TO OPERATE - This air compressor pressure switch is equipped with an unloader and on/off lever, easy to install and adjust; With this pressure switch, you can adjust the pressure of the pump, and you can adjust the adaptive pressure according to the work needs. 2-spring design of the water pump pressure switch allows for cutting and cutting pressure settings to be adjusted Widely Used This air compressor pressure switch is suitable for 90-125 Psi air compressors.