xpansion valves are devices used to control the refrigerant flow in a refrigeration system. They help to facilitate the change of higher pressure of liquid refrigerant in the condensing unit to lower pressure gas refrigerant in the evaporator.

The term “low side” is used to indicate the part of the system that operates under low pressure, in this case the evaporator. The “high side” is used to indicate the part of the system that operates under high pressure, in this case the condenser.

Manualexpansion valve  It is the type that requires a person to control the valve to open more or less. The refrigerant flow rate also depends on the pressure difference between the high pressure and low pressure side of the system.

refrigeration current There are many types depending on the needs of use, including refrigerators, freezers, cold rooms, ice houses, air conditioners. refrigeration in general industrial plants with the same objective is Reduce the temperature and maintain the required temperature.

The basic cooling principle has the same characteristics. The substance, which is the medium for cooling. (Refrigerant) change state by using latent heat. in order for the substance that is the cooling medium to change its state from liquid to vapor As a result, the area has a lower temperature. This means that the area will be cold.