The unit converts pressure into a linear 0-5V DC signal

and an inlet filtered screen to protect internal components from debris

Common signs include inconsistent burner performance

With its nitrile seal material

By replacing the worn float-operated mechanism

Lochinvar & A.O. Smith 100170490 Gas Valve 322057-301 The unit converts pressure intoThe Lochinvar & A. O. Smith 100170490 Gas Valve is a critical OEM replacement part designed for high efficiency hydronic systems. As an essential component for natural gas combustion control, this valve regulates fuel delivery to the burner assembly with high precision, ensuring the manifold pressure remains within manufacturer specified tolerances. Built for the rigorous demands of commercial and residential boilers, the 100170490 is engineered to