The Trane VAL08797 3-Ton Thermal Expansion Valve (TXV) is a refrigerant metering component designed for compatible R-410A HVAC systems. It regulates refrigerant flow into the evaporator based on temperature and pressure conditions, helping maintain proper superheat for efficient heat transfer. Featuring 3/8-inch x 1/2-inch ODF connections, this TXV is commonly used in Trane air condit... https://www.partshnc.com/val08797-trane-3-ton-thermal-expansion-valve-txv-r410a-3-8-x-1-2