The NBR seals ensure excellent chemical resistance and leak-tight performance within a 0-5 PSI pressure range

or 25PT) to manage pressure

This 3/4" NPT gas valve features a thermopile magnet and a slotted safety magnet

simplified installation

Lennox 33W19 Pressure Switch 322027-701 The NBR seals ensure excellentThe 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