Lochinvar & A.O. Smith 100111630 Pressure Switch 320734-701 Always verify the part number

Always verify the part number on the old switch's label before replacement

enabling the linear modulation of M/MR valves

providing a significant safety margin against system pressure surges

Industrial Build Quality: Constructed with bimetallic disc technology to withstand high-amperage switching in demanding environments

facilitating a drop-in installation without the need for additional mount modifications

Lochinvar & A.O. Smith 100111630 Pressure Switch 320734-701 Always verify the part numberThe Lochinvar & A. O. Smith 100111630 Pressure Switch is a critical safety component designed for precise air pressure detection in high efficiency water heaters and boiler systems. Specifically calibrated to a 1. 00" WC (Water Column) set point, this SPST (Single Pole Single Throw) switch features a normally open (NO) contact configuration. It is engineered to monitor the combustion chamber pressure, ensuring the blower motor is sufficiently venting