Lennox 99K39 Expansion Valve mario Class 2 Safety Certified: Meets

Class 2 Safety Certified: Meets strict electrical standards for low-voltage power supplies in permanent HVACR installations

ensuring stable control loop performance in both heating and cooling systems

Direct OEM Compatibility: Seamlessly replaces Hankison 3004-1 and SPX Flow visual indicators without line modifications

This valve is the standard for contractors maintaining National Board certified steam generators

Lennox 99K39 Expansion Valve mario Class 2 Safety Certified: MeetsAs 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.