Lochinvar & A.O. Smith 100166246 Pressure Switch Kit 321894-706 Durable Construction: Features single porcelain

Durable Construction: Features single porcelain designs and a ferromagnetic core for traditional reliability in the field

Built for durability in commercial fan coil systems

Is this compatible with ML7421 or M6421 actuators

Maintain precise control over your system’s exhaust pressure and flow with the Carrier 50DK500704 Exhaust Regulator

ensuring physical footprint and electrical terminal alignment

Lochinvar & A.O. Smith 100166246 Pressure Switch Kit 321894-706 Durable Construction: Features single porcelainThe Lochinvar & A. O. Smith 100166246 Pressure Switch Kit is a critical safety component designed for precise combustion air monitoring in high efficiency boilers and water heaters. As a veteran grade OEM replacement part, this kit ensures the integrated VFD blower or inducer fan is generating the correct static pressure before allowing the ignition sequence to proceed. It acts as a blower prover switch, effectively preventing the gas valve from