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the serviceable integral stainless steel strainer and reinforced EPDM diaphragm simplify field maintenance while maintaining consistent pressure regulation under varying supply velocities
ensuring broad refrigerator and AC part compatibility
Technicians should note that using the ST073921AV helps maintain consistent CFM output and prevents oil carryover in modular systems
Optimized Combustion: Maintains the exact CFM required for high-efficiency heat transfer and safe operation
Key Benefits Precise Calibration: Factory-set 325 PSI high-limit trip point prevents equipment damage without the drift common in aftermarket controls
Nordyne 632550R Pressure Switch 320735-701 the serviceable integral stainless steelThe 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
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