For the 5/16" orifice size

ensuring that heat from combustion gases is efficiently moved to the indoor airflow while maintaining a airtight seal to prevent carbon monoxide leakage

The unit is equipped with an integral vent limiting orifice

reducing field modifications

it meets stringent safety standards for combustion air proving and clogged filter detection

Bradford White 239-46990-01 Gas Valve 320074-702 For the 5/16" orifice sizeThe Bradford White 239 46990 01 Gas Valve is an OEM replacement Honeywell water heater thermostat specifically engineered for atmospheric vent water heaters. This natural gas water heater valve features a standard 1 2" NPT inlet and is factory calibrated to a 4" W. C. outlet pressure to ensure precise fuel metering and combustion efficiency. Designed with an integrated thermal switch connection and a built in piezo igniter assembly, this component