Nordyne 632571 Pressure Switch 318172-701 Always match the part number

Always match the part number to the appliance rating plate

providing rapid response during cycle transitions

it includes the regulator spring compatible with the Honeywell or White-Rodgers valves standard in these Reznor heating units

while simultaneously monitoring low-voltage safety circuits and gas valve timing

Nordyne 632571 Pressure Switch 318172-701 Always match the part numberThe Nordyne 632571 Pressure Switch is a critical safety and operational component designed for negative pressure monitoring in high efficiency furnace and HVAC applications. This SPST pressure switch is factory calibrated to a set point of 1. 3" WC (water column), ensuring the inducer motor is moving sufficient combustion air through the heat exchanger before ignition occurs. Built with a standard 1 4" barb connection for vacuum hose integration, this