Cleveland Controls AFS-155 Air Proving Switch 319847-401 as well as various gas-fired

as well as various gas-fired unit heaters requiring an air flow proving signal

With its universal air sensing capabilities

Durable Construction: Features a stainless steel burner tube and machined cast iron venturi for superior gas-air mixing and corrosion resistance

featuring a 3/8-inch NPT connection and factory-calibrated 3

Universal Compatibility: Designed for use with all common non-corrosive refrigerants

Cleveland Controls AFS-155 Air Proving Switch 319847-401 as well as various gas-firedThe Cleveland Controls AFS 155 Air Proving Switch is a versatile differential pressure switch designed to monitor positive, vacuum, or differential air pressure in commercial HVAC and energy management systems. This adjustable air pressure switch features a wide set point range from 0. 05" . 02" to 2. 0" w. c., allowing for precise field adjustments to meet specific application requirements. Built with a rugged die cast aluminum housing and a silicone