Resideo VR8304Q4511 Valve 322838-752 it eliminates the safety risks

it eliminates the safety risks associated with mismatched orifices or improper spring tension in the gas valve regulator

or the compressor short-cycling due to low suction pressure caused by a "stuck closed" orifice

Included in the assembly is a dedicated calibration cover wrench

Enhanced Safety: Maintains the negative pressure required to safely purge combustion byproducts from the heat exchanger

Resideo VR8304Q4511 Valve 322838-752 it eliminates the safety risksThe Resideo VR8304Q4511 Valve is a professional grade, two stage gas valve engineered for high capacity applications up to 300,000 BTU. Designed as a combination gas control, this unit integrates a manual valve, two automatic operators, and a pressure regulator into one compact intermittent pilot gas valve. It operates on 24vac and features a 3 4" x 3 4" straight through body pattern, with 1 4" male quick connect terminals for streamlined electrical