The Heatcraft Refrigeration SBFSE-B-Z Thermal Expansion Valve (TXV) is a precision refrigerant metering device designed for 1-1/4 to 2-ton commercial refrigeration and HVAC systems, featuring 3/8" x 1/2" ODF connections. Installed in the liquid line at the evaporator inlet, it senses evaporator temperature and pressure to regulate refrigerant flow and maintain proper superheat. This c... https://www.partshnc.com/heatcraft-sbfse-b-z-1-1-4-2-ton-thermal-expansion-valve-txv-3-8-x-1-2-odf