Lennox 69W43 Flame Sensor This 220F manual reset blocked

This 220F manual reset blocked vent switch is designed to detect excessive flue gas temperatures caused by obstructions

The Sensus 143-16-021-03 Red Spring is a critical calibration component engineered for high-capacity gas pressure regulators

This valve is fully compatible with HCFC and HFC refrigerants

"pitting" on the contact surfaces

This configuration includes a 1/8" MPT connection below the hex

Lennox 69W43 Flame Sensor This 220F manual reset blockedThe Lennox 69W43 Flame Sensor is a critical OEM safety component engineered for precise flame rectification within gas furnace burner assemblies. As a direct 69W4301 replacement part, this sensor features a high grade stainless steel sensing rod capable of withstanding operating temperatures up to 2190F, paired with a durable ceramic insulator rated for 1000F. When the furnace control board initiates the ignition sequence, the 69W43 detects the