Lochinvar & A.O. Smith 100166146 Pressure Switch 30067439-890 A faulty switch may fail

A faulty switch may fail to close at 120

mitigating common failure points in commercial HVACR refrigeration cycles

maintaining identical mechanical and electrical footprints

The R04320 is specific to certain AAON series units

The rugged aluminum die-cast housing and corrosion-resistant internal components provide reliable service in ambient temperatures ranging from -40°F to 205°F

Lochinvar & A.O. Smith 100166146 Pressure Switch 30067439-890 A faulty switch may failThe Lochinvar 100166146 Pressure Switch is a critical safety component designed for precise pressure monitoring within high efficiency commercial boilers and water heaters. Engineered as a direct replacement for the PRS2045, this manual reset pressure switch ensures the burners only fire when the venting system maintains safe atmospheric conditions. This OEM Lochinvar part is built to handle the rigorous duty cycles of A. O. Smith and Lochinvar Knight