always verify the gas orifice and venturi settings during installation

minimizing the risk of signal loss or mechanical failure in steam and hot water applications

the "B" suffix typically indicates a packaging or bulk revision

and L series brewers equipped with high-pressure hot water faucets

Lochinvar & A.O. Smith 100109957 Blower Assembly 323055-751 always verify the gas orificeThe Lochinvar & A. O. Smith 100109957 Blower Assembly is a factory authorized OEM component engineered for high recovery FPSH 75 water heater models. As a critical part of the combustion system, this forced draft blower ensures precise air to fuel ratios and consistent venting of flue gases. This assembly is the direct successor to multiple discontinued part numbers, including 9004581105, 194509 00, and 195841 000, allowing for seamless integration