Honeywell VR8305Q4500 Gas Valve 30067439-890 Is the S1-7990-317P/A compatible with

Is the S1-7990-317P/A compatible with variable speed systems

For optimal performance and to maintain the NEMA 4 rating

If the internal slide of the valve is physically stuck due to contaminants

whereas a 2-pole only switches two

Honeywell VR8305Q4500 Gas Valve 30067439-890 Is the S1-7990-317P/A compatible withThe Honeywell VR8305Q4500 is an industrial grade two stage gas valve engineered for precision in high capacity 24Vac heating systems. This 3 4" x 3 4" direct ignition valve is purpose built for use with hot surface or direct spark ignition (HSI DSI) configurations and is the factory authorized direct replacement for S1 025 35303 000. It features a straight through body pattern with an adjustable servo regulator to maintain consistent manifold