The Carrier EA680035 Thermal Expansion Valve (TXV) is a refrigerant metering component designed to regulate refrigerant flow into the evaporator coil. It automatically adjusts the refrigerant supply based on temperature and pressure changes, helping maintain proper evaporator superheat and efficient heat transfer. This valve is used in compatible Carrier air conditioning systems, heat... https://www.partshnc.com/ea680035-carrier-thermal-expansion-valvetxv-valve