Lennox 33W19 Pressure Switch R-22 and all necessary o-rings for

and all necessary o-rings for the stem

This part number refers to the electrode for housing

The NEMA-rated enclosure provides mechanical protection for internal components

0 microamp minimum flame rectification signal to prevent nuisance shutdowns and ensure safe operation

Maintenance-Free Operation: No lubrication or periodic maintenance required after initial installation

Lennox 33W19 Pressure Switch R-22 and all necessary o-rings forThe Lennox 33W19 Pressure Switch is a high precision, 2 stage dual pressure switch engineered for critical safety monitoring in gas furnaces and air handling units. This OEM component (part number 101599 03) features two independent, factory calibrated set points to ensure the inducer motor is moving the correct volume of air for safe combustion. The high stage set point is 1. 37" W. C. while the low stage set point is 0. 30" W. C., providing accurate