What is the correct order of components on the liquid line of a reciprocating system from the condenser to the TEV?

In a reciprocating refrigeration system, the correct order of components on the liquid line from the condenser to the thermal expansion valve (TEV) is essential for proper function and efficiency. This order is significant for several reasons:

First, the liquid line begins at the condenser where the refrigerant has transitioned from a gas to a liquid. This line should include a king valve, which serves as a shut-off valve that allows maintenance or replacement of components downstream without losing refrigerant charge.

Following the king valve, the filter drier is positioned to remove any moisture and contaminants within the refrigerant. Moisture can cause corrosion and reduce the efficiency of the system by forming ice in the expansion device or causing capillary blockage.

Next, the solenoid valve is located after the filter drier. This component regulates the flow of refrigerant to the TEV based on the system's operational demands, ensuring that refrigerant only flows when required, usually connected to the system's control circuitry.

Finally, the sight glass is installed to provide a visual indication of the refrigerant quality and to detect the presence of liquid refrigerant, ensuring that the system is functioning properly before the TEV.

This sequence — king valve, filter drier, solenoid valve, and