Enhanced Safety Interlock: Prevents gas valve activation until the pressure switch confirms sufficient draft

the 50DK500129 ensures that internal components remain securely seated during high-velocity airflow and thermal cycling

technicians should verify the specific furnace wiring diagram

Engineered specifically for 1 Heat / 1 Cool conventional systems and single-stage heat pumps without auxiliary heat

Nordyne 632422R Pressure Switch 322056-301 Enhanced Safety Interlock: Prevents gasThe Nordyne 632422R Pressure Switch is an essential OEM safety component designed for precise furnace pressure monitoring in high efficiency heating systems. This SPST (Single Pole Single Throw) vacuum switch is factory calibrated to a specific 1. 00" WC (Water Column) set point, ensuring the inducer motor maintains proper static pressure and flue venting before allowing the ignition sequence to proceed. As a genuine Nordyne replacement part, it is