Nordyne 664275R TXV 318973-401 heat pump signals

heat pump signals

Unlike standard probe controls that can be triggered by momentary surging or priming

maintaining factory-specified tolerances

covering the standard HVAC range and safety damper ventilation modes

Nordyne 664275R TXV 318973-401 heat pump signalsThe Nordyne 664275R TXV is a critical N Series thermal expansion valve engineered specifically for 5 ton packaged units. Designed for R410A refrigerant, this OEM component provides precise metering to maintain the correct superheat across the evaporator coil, preventing liquid slugging and ensuring compressor longevity. As a direct Nordyne replacement part, it eliminates the compatibility issues often found with universal aftermarket valves,