Lennox 80K80 Pressure Switch 326010-701 This specific pneumatic reversing relay

This specific pneumatic reversing relay is factory-calibrated to a 9 PSI crossover point

Is this the correct replacement for a normally open valve

ensuring system safety after power loss

making it a reliable low voltage thermostat for diverse job sites

This access door is essential for regular furnace maintenance

Lennox 80K80 Pressure Switch 326010-701 This specific pneumatic reversing relayThe Lennox 80K80 pressure switch is a critical safety component designed for specific Lennox furnace models to ensure proper inducer motor performance and venting integrity. This SPST furnace pressure switch features a . 65" WC set point, calibrated to monitor the negative pressure generated by the combustion blower. Engineered with a 1 4" barb connection, it provides a secure fit for standard vacuum tubing, preventing air leaks that can lead to