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the 55440 disc is ground and lapped to exacting tolerances to ensure a positive shut-off and long-term condensate removal efficiency
making it suitable for high-efficiency fixtures
The low fire rate is set via the adjustable bypass orifice
This replaces the hard seats and springs
Lochinvar & A.O. Smith 100233597 Gasket 323055-751 the 55440 disc is groundThe Lochinvar & A. O. Smith 100233597 Gasket is a critical high temperature seal designed specifically for the flue exhaust system on heavy duty commercial boilers and water heaters. Engineered to withstand intense thermal cycling, this EPDM flue gasket ensures a gas tight seal between the heat exchanger and the venting assembly, preventing hazardous combustion byproducts from escaping into the mechanical room. This component is a direct replacement
