Nordyne 632675 Pressure Switch 321702-401 This 250F M/R safety rollout

This 250F M/R safety rollout switch acts as a primary line of defense

The McDonnell & Miller 51-HD Mechanism (Part Number 134900) is a heavy-duty mechanical water feeder designed for low pressure steam and hot water boilers

This unit comes equipped with a 60-inch capillary

a different spring or a complete high-pressure assembly would be necessary to maintain safe and accurate regulation

it ensures seamless integration and field reliability for technicians servicing Nordyne

Nordyne 632675 Pressure Switch 321702-401 This 250F M/R safety rolloutThe Nordyne 632675 Pressure Switch is a critical safety component designed for high efficiency HVAC operations, specifically calibrated to a 1. 09" WC (water column) set point. As a veteran grade OEM furnace pressure switch, this part is engineered to monitor the pressure differential created by the inducer motor, ensuring the exhaust vent system is clear of obstructions before allowing the ignition sequence to proceed. This spst nc pressure switch