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Maintains a stable output signal that resists false signals in complex combustion management systems
perimeter radiation
Operating with R410A refrigerant
Ease of Installation: Standard 10-inch diameter with accurate bolt-hole alignment ensures a "first-time" seal for field service
High-Volume Airflow: Engineered blade geometry maximizes static pressure capability for consistent air distribution across large ductwork
Lennox 99K39 Expansion Valve 322056-301 Maintains a stable output signalAs a veteran HVAC technician, I know that maintaining precise refrigerant control is the difference between a high efficiency system and a compressor failure. The Lennox 99K39 Expansion Valve is a genuine OEM replacement part designed for accurate metering in residential and commercial cooling systems. This Thermostatic Expansion Valve (TXV) utilizes a 3 8 inch inlet and a 1 2 inch outlet to regulate liquid refrigerant flow into the evaporator coil.