Lochinvar & A.O. Smith 100093810 Switch 319848-301 maintaining the specific timing requirements

maintaining the specific timing requirements for pre-purge and post-purge cycles necessary for heat exchanger longevity and indoor air quality

While some VT series models handle low-pressure steam up to 15 psi

the Rheem 703001 kit typically includes the required gasket and upflow mounting plate for a standardized installation

Nitride systems require the 50A65 series to prevent premature igniter failure

Lochinvar & A.O. Smith 100093810 Switch 319848-301 maintaining the specific timing requirementsThe Lochinvar & A. O. Smith 100093810 Switch is a critical safety component designed specifically for natural gas water heaters, including the high volume FG40T34 residential model. As a primary water heater door switch, this part functions as an electrochemical interlock, ensuring the burner assembly only receives fuel when the access door is fully seated and secured. This OEM replacement part is engineered to meet the precise tolerances of Lochinvar