Pressure switches are a vital safetly item in any air suspension system as they ensure the tank is not over pressurised. They are also vital to the functioning of the system. There are 2 figures quoted for each. The first (is the lower figure and called the on-pressure) is the pressure below which the compressor will come on if air is used from the tank. The second figure is the off-pressure and the maximum that the compressor will fill the tank to. Once it reaches this pressure it will switch off.
90/120 with tail

90 psi on, and 120 psi off, sealed with long tail. 30amp capacity.
110/145 with tail

165/200

Air Pressure Switch; 110-145 PSI;
Turns compressor on at pressures less than 110 PSI and shut the compressor off at 145 PSI. Threads are 1/8″ MNPT.
NOTE: Will work with all compressors excluding the Viair 100C Compressor 130 PSI
Air Pressure Switch; 145-175 PSI;
Turns compressor on at pressures less than 145 PSI and shut the compressor off at 175 PSI. Threads are 1/8″ MNPT.
NOTE: This pressure switch is only recommended for the Viair 380C and Viair 480C compressors.
Air Pressure Switch; 85-105 PSI;
Turns compressor on at pressures less than 84 PSI and shut the compressor off at 105 PSI. Threads are 1/8″ MNPT.
NOTE: Will work with all Air Lift compressors.


