The Trane VAL08633 Thermostatic Expansion Valve (TXV) with mechanical fitting regulates refrigerant flow into the evaporator coil of compatible HVAC systems. It responds to changes in refrigerant temperature and pressure to maintain proper superheat and support efficient heat transfer. Designed for use in compatible air conditioning and refrigeration equipment, this valve helps mainta... https://www.partshnc.com/trane-val08633-thermostatic-expansion-valve-txv-w-mechanical-fitting