A Thermal Expansion Valve (TXV or TEV) is an important component in refrigeration and air conditioning systems. Its main purpose is to control the flow of refrigerant into the evaporator, ensuring the system operates efficiently and reliably under varying load conditions. The thermal expansion valve regulates the amount of liquid refrigerant that enters the evaporator coil. Its operation is based on temperature and pressure conditions at the evaporator inlet and outlet. The thermal expansion valve ensures proper superheating and prevents liquid refrigerant from returning to the compressor avoiding compressor damage.