The Trane VAL10591 Thermal Expansion Valve (TXV) 3/8" x 1/2", 7-Ton R-410A is a precision refrigerant metering device designed to regulate the flow of R-410A refrigerant in compatible air conditioning and heat pump systems. It automatically adjusts refrigerant delivery based on cooling demand, helping the evaporator maintain optimal performance and efficiency. Commonly used in residen... https://www.partshnc.com/38x12-7ton-r410a-txv-5