When the thermocouple voltage drops due to pilot outage

Engineered for high-performance motor start assist

The AZ2280-1A-24D is the manufacturer’s base model used by York for this specific 30A relay assembly

this "new style" regular temperature diaphragm provides the flexibility and resilience required for consistent modulating control in steam and water valve applications

the DFS-221 series generally supports differential sensing

Weil McLain 511-044-360 Gas Valve Freon When the thermocouple voltage dropsThe Weil McLain 511 044 360 Gas Valve is an OEM combination gas control engineered specifically for residential hydronic systems. This 24V gas valve features standard 1 2" NPT inlet and outlet connections, housing a dual automatic seat design to meet safety codes for shutoff reliability. As a high performance boiler replacement part, it is the primary control for the burner manifold on Weil McLain CGa, CG, and EG series cast iron boilers, specifically