Lochinvar & A.O. Smith 100171950 Valve Freon Most failures occur due to

Most failures occur due to improper leveling

The internal mechanical spring return mechanism ensures a reliable fail-safe position upon loss of power

Precise Fitment: Engineered to match the four-bolt valve bracket pattern for the Model 21-27 series

000 BTU/hr and a multiple load capacity of 250

Use 1/4" O

Lochinvar & A.O. Smith 100171950 Valve Freon Most failures occur due toThe Lochinvar & A. O. Smith 100171950 Valve is a critical OEM replacement gas valve kit engineered specifically for Lochinvar Knight WH399 wall mount boilers. This high precision combustion control assembly includes the gas valve, venturi gasket, and necessary hardware to ensure a zero governor manifold pressure environment. As a veteran grade commercial boiler part, it regulates fuel flow based on the negative pressure signal generated by the blower,