Nordyne 632448R Pressure Switch Rotation is counter-clockwise (CCW) when

Rotation is counter-clockwise (CCW) when viewed from the discharge side

serving as a direct White-Rodgers 90-248 cross reference for many OEM parts

The 155-degree rating is calibrated for specific pre-heater assemblies where precise fuel atomization temperatures are required for efficient combustion

or the internal diaphragm of the switch has ruptured

Can this be used in an externally equalized valve

Nordyne 632448R Pressure Switch Rotation is counter-clockwise (CCW) whenThe Nordyne 632448R Pressure Switch is an essential safety component engineered for precise differential air pressure sensing in residential gas furnaces and HVAC systems. As a Single Pole Single Throw (SPST) switch, it is factory set to trip at 1. 65 inches water column (1. 65" WC), ensuring the inducer motor maintains the specific vacuum required for safe combustion and proper flue exhaust. This OEM Nordyne replacement part features a standardized 1