The Danfoss 067L5956 4-Ton Thermal Expansion Valve (TXV) Kit 3/8" TR6 R-410A precisely controls refrigerant flow into the evaporator to maintain optimal system efficiency and performance. Designed for HVAC and refrigeration systems using R-410A refrigerant, it ensures stable superheat levels and prevents liquid refrigerant from entering the compressor. https://www.partshnc.com/38tr6-txv-r-410a-4ton-wkit