The diagram of an automatic expansion valve separates the atmospheric pressure and the system pressure. Is this statement True or False?

The statement is true because an automatic expansion valve (AEV) is designed to maintain a precise level of refrigerant flow based on the temperature and pressure conditions within the system. The AEV consists of two separate pressure chambers: one that is exposed to atmospheric pressure and another that is influenced by the system pressure.

In an AEV, the diaphragm mechanism responds to the pressure differential between these two chambers. The atmospheric pressure acts on one side of the diaphragm, while the pressure of the refrigerant in the system acts on the other side. This separation ensures that the valve can adjust the flow of refrigerant into the evaporator coil, maintaining appropriate conditions for efficient cooling or heating.

By controlling the amount of refrigerant based on system pressure versus atmospheric pressure, the AEV helps to optimize the performance of the HVAC system, ensuring reliability and efficiency. This separation is crucial for allowing the system to respond dynamically to changes in load and operating conditions, making the statement accurate.