Which furnace models use the Williams P200900 gasket

or P771-7002

the S301-IRFS provides high-selectivity detection of R123

With an interrupting rating of 200

allowing for stable control and preventing the "hunting" common in standard ball valves

Williams P323093 Gas Valve Els PW 17895 Which furnace models use theThe Williams P323093 Gas Valve is a critical OEM replacement part engineered for Williams wall and floor furnaces requiring a 4" WC Natural Gas manifold pressure. This millivolt gas valve operates on a self generated power system from a thermopile, ensuring reliable performance without external electrical input. Designed for direct compatibility with natural gas systems, the P323093 provides precise fuel regulation and features an integrated manual