leak-resistant connection to the liquid and suction lines

Constructed with high-grade materials to withstand elevated temperatures

3-inch diameter motor for its ability to drive fans in demanding environments

This kit features a solid mounting base

Lennox 78H40 Expansion Valve THPU32HP7Y leak-resistant connection to the liquidThe Lennox 78H40 Expansion Valve is a critical 6 ton thermostatic expansion valve (TXV) engineered for precise refrigerant metering in high capacity light commercial and residential cooling systems. As a veteran grade HVAC replacement part, the 78H40 (identical to Lennox 78H4001) regulates refrigerant flow into the evaporator coil by sensing heat load changes, preventing liquid slugging and ensuring the compressor receives superheated vapor. This TXV