Viair Sealed Pressure Switch 90223

Heavy Duty Sealed Pressure Switch 90-120 psi, provides a pre-set turn on and turn off pressure to take the guesswork out of operating air compressors when filling air tanks. When the air pressure in your air tank drops below 90 psi. The pressure switch will turn on and allow the compressor to fill your air tank to 120 psi, when the switch will automatically turn off. A 40 Amp minimum rated relay is suggested for use to allow longest life.