The Trane VAL12842 3-Ton Thermal Expansion Valve (TXV) is a refrigerant metering component designed for compatible 3-ton HVAC air conditioning and heat pump systems. It regulates refrigerant flow into the evaporator coil based on cooling demand and superheat conditions, supporting efficient heat absorption and proper system operation. By maintaining appropriate refrigerant delivery, t... https://www.partshnc.com/trane-val12842-3-ton-thermal-expansion-valve-hxe-kx200-r410a