Lochinvar & A.O. Smith 100187859 Switch 322838-754 1/2-inch bore

1/2-inch bore

ensuring accurate calibration in the field

the valve will not allow gas to reach the main burner

This genuine OEM replacement kit

Lochinvar & A.O. Smith 100187859 Switch 322838-754 1/2-inch boreThe Lochinvar & A. O. Smith 100187859 Switch is a critical 2. 0" blocked outlet switch designed for high efficiency gas fired commercial water heaters and boilers. As a genuine OEM replacement part, this pressure switch is calibrated to detect vent obstructions, ensuring the system shuts down safely if exhaust gases cannot be properly expelled. It is commonly utilized in A. O. Smith Cyclone BTH 300A series and comparable Lochinvar Power Fin models.