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A veteran technician knows that a high limit switch failure often manifests as short-cycling or a blower fan that runs continuously
When selecting a replacement relief valve
By ensuring consistent spark generation and millivolt-sensitive flame sensing
Its robust internal diaphragm is built to withstand high-cycle operations
Lochinvar & A.O. Smith 100161835 Valve 320788-703 A veteran technician knows thatThe Lochinvar & A. O. Smith 100161835 Air Metering Valve is a critical component for maintaining the precise combustion air to fuel ratio in high efficiency condensing boilers and water heaters. Engineered for exact modulation, this venturi air valve ensures the burner receives the correct airflow required for stable ignition and optimal thermal efficiency. It is a direct OEM replacement part designed to interface seamlessly with the blower assembly
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