Lennox 50W74 Gas Valve 318973-401 Failure to open usually indicates

Failure to open usually indicates a fault in the actuator motor or a blockage in the damper blade

lead-free bronze wet rotor circulator designed for quiet

this 24V AC coil features a 6-watt rating

5-inch depending on housing revision) mounting center distance and a 2-inch base-to-shaft center height

a sensor with a cracked ceramic insulator or deep pitting must be replaced to ensure the safety circuit remains intact and grounded properly

Lennox 50W74 Gas Valve 318973-401 Failure to open usually indicatesThe Lennox 50W74 is a direct replacement White Rodgers 36G24 463 natural gas valve designed for high efficiency Lennox gas furnaces. This single stage gas valve operates on a 24V redundant solenoid system, featuring a 1 2" NPT inlet outlet configuration for standard manifold alignment. Engineered for precision fuel regulation, it utilizes an intermittent pilot ignition or direct spark system depending on the furnace control board configuration. The