Always verify circuit amperage before installation

Built on a compact open frame design

They are interchangeable within the Lennox parts catalog for the same furnace models

making it highly reliable in applications where solid-state electronics might fail

This adapter provides a reliable mechanical fit that prevents accidental disconnects during high-vibration burner cycles

Hydrotherm 02-1554 Gas Valve 30067439-890 Always verify circuit amperage beforeThe Hydrotherm 02 1554 Gas Valve is a critical combustion control component engineered for high performance natural gas hydronic systems. Designed specifically for Hydrotherm MR and VGA boilers, this valve ensures precise fuel regulation and consistent manifold pressure. Operating on a standard 24V AC circuit, it maintains a factory calibrated 3. 5" WC (Water Column) output, which is essential for stable flame characteristics and efficient heat