The Firestone sealed air pressure switch (90–120 PSI) is a compact, individually packaged 1/8 in. NPT switch for air helper spring systems. It offers a sealed switching function to actuate inflation or deflation at a specified pressure range and is intended for integration with Firestone air accessories and control components to maintain desired air pressure in helper springs.
Firestone Sealed Air Pressure Switch 90-120 PSI - Single (WR17609401)