Nordyne 632550R Pressure Switch 320788-704 Fail-Safe Logic: Integrated spring return

Fail-Safe Logic: Integrated spring return functionality provides an essential safety layer by resetting the valve during power interruptions

which can lead to improper vacuum readings and system lockouts

Inconsistent voltage at the reversing valve is another common indicator

Designed with 3/8" x 5/8" ODF connections

Corrosion Resistance: High-grade stainless steel construction prevents premature failure in high-moisture or coastal environments

Nordyne 632550R Pressure Switch 320788-704 Fail-Safe Logic: Integrated spring returnThe Nordyne 632550R Pressure Switch is the genuine OEM replacement for the legacy 632550 model, specifically engineered for high efficiency Nordyne furnace units and related HVAC systems. As a critical safety component, this normally open (NO) pressure switch is factory calibrated to a 1. 0" WC make and 0. 7" WC break setpoint. It utilizes a negative pressure diaphragm to verify the draft inducer motor is generating sufficient static pressure before