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The genuine OEM Lennox 10W60 gas valve, also referenced as R47485-002, regulates the flow of gas to the burner assembly in compatible Lennox furnaces. It opens to supply fuel for combustion when the ignition control calls for heat and closes to shut the gas off safely, making it one of the most important safety and performance components in the heating system.
Typical warning signs that the 10W60 is failing include the furnace not igniting, delayed ignition with a loud ignition sound, short cycling, an erratic or weak flame, or no heat output despite the blower and igniter operating. A valve that audibly clicks but does not deliver gas, or one that fails to close completely, should be replaced promptly.
Selecting an OEM Lennox 10W60 valve ensures the precise manifold pressure, gas-type calibration, and 24V operation your furnace was designed around. Because gas valves are precision safety devices, the genuine factory part protects proper combustion, dependable ignition, and the safety ratings of your Lennox equipment — protections that aftermarket substitutes may compromise through fit or calibration differences.