The Carrier EA36UZ921 Thermal Expansion Valve (TXV) is an HVAC component that regulates refrigerant flow into the evaporator to maintain proper cooling performance. It operates by responding to refrigerant temperature and pressure, automatically adjusting flow to control superheat and support efficient heat transfer. Designed for compatible Carrier HVAC systems, including selected air... https://www.partshnc.com/carrier-ea36uz921-thermal-expansion-valve