Common Questions: What are the open and close temperatures

In heavy-duty HVAC applications

cause pressure switch failures

The robust ceramic base measures 1

"CO" stands for Cut-Out

Nordyne 632443R Pressure Switch Common Questions: What are theThe Nordyne 632443R is a critical OEM replacement pressure switch designed for induced draft furnaces. Engineered to monitor the differential pressure between the draft inducer motor and the flue, this SPST (Single Pole Single Throw) switch is factory calibrated to a precise 0. 85" WC (Water Column) trip point. It features a 1 4" barbed connection for standard pneumatic tubing and two terminal electrical contacts for direct furnace control board