Lochinvar & A.O. Smith 100110806 Switch 319847-401 providing a reliable analog thermostat

providing a reliable analog thermostat solution for line voltage fans

With an elevated seating design that facilitates immediate water drainage away from the seat area

This kit is strictly manufactured for use with the Williams 6003 gas valve

providing stable and repeatable linear movement

With a 825 RPM rating and 3-speed versatility

Lochinvar & A.O. Smith 100110806 Switch 319847-401 providing a reliable analog thermostatThe Lochinvar & A. O. Smith 100110806 BTH 400 Blower Prover Switch is a critical safety component designed specifically for Cyclone BTH 400 commercial water heaters. This normally open, positive air pressure switch acts as a safety interlock, verifying that the combustion air blower is generating sufficient airflow before the ignition sequence is allowed to proceed. By "proving" the blower's operation, it prevents the gas valve from opening if exhaust