Nordyne 632432R Pressure Switch Common symptoms include heating elements

Common symptoms include heating elements that won't turn off

the SP10550B is the official direct replacement for the AP10550B-6

This valve is designed for hot water service and is typically rated for temperatures up to 250°F to ensure compatibility with high-output hydronic systems

Built to handle 480/277/240/208Vac primary voltage inputs

In Bard wall-mount applications

Nordyne 632432R Pressure Switch Common symptoms include heating elementsThe Nordyne 632432R Pressure Switch is an essential safety component engineered for negative pressure detection in specialized HVAC systems. This genuine OEM furnace part is calibrated to close at a setpoint of 0. 70" WC (Water Column), ensuring the draft inducer blower is generating sufficient vacuum before the ignition sequence begins. Designed as a normally open SPST switch, it acts as a critical interlock to prevent combustion if venting is