Pay in 4 interest-free payments of $35.36 Learn more
Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
Enhanced Safety: The 24V slow open mechanism provides a gradual ramp-up of gas flow
Factory Calibrated 450 PSI Set Point: Eliminates the need for field adjustments
or frost on the expansion valve
This York expansion valve is a specific OEM replacement
Lochinvar & A.O. Smith 100112540 Burner Assembly 318518-761 Enhanced Safety: The 24V slowThe Lochinvar & A. O. Smith 100112540 Burner Assembly is a critical OEM replacement part engineered for high efficiency natural gas water heaters and commercial boilers. This 18 inch burner assembly features a precision drilled #32 orifice, ensuring the correct stoichiometric ratio for stable combustion and optimal thermal output. As a genuine final burner assembly kit, it eliminates the calibration issues often found with universal aftermarket