The Heatcraft Refrigeration 29311829 Thermal Expansion Valve is a precision-engineered component designed to regulate refrigerant flow in commercial refrigeration systems. It operates by automatically adjusting the amount of refrigerant entering the evaporator according to cooling demand, helping maintain proper superheat and consistent temperatures. Designed for use in commercial ref... https://www.partshnc.com/29311829-heatcraft-refrigeration-thermal-expansion-valve