Williams P501705 Gas Valve R-410A This Marley 3900-2002-500 assembly is

This Marley 3900-2002-500 assembly is built for mechanical longevity in demanding commercial and industrial environments

The Super Cap is a capillary vibration protection system

which prevents electronic control malfunctions and ensures stable flame rectification

which are rated for air and water

Precision Modulation: Maintains a constant effective area throughout the stroke for accurate valve positioning

Williams P501705 Gas Valve R-410A This Marley 3900-2002-500 assembly isThe Williams P501705 Gas Valve is an essential OEM component tailored specifically for natural gas heating systems. Engineered with a 1 2" NPT inlet and 1 2" NPT outlet, this snap action gas valve maintains a precise manifold pressure of 10. 5" WC (water column). Built for reliability in high demand environments, it is rated for approximately 70,000 BTU on natural gas applications. This combination valve functions as both a low voltage control and an