Which of the following sequences properly arranges liquid line components?

The correct arrangement of liquid line components is crucial for ensuring the proper functioning of a refrigeration or air conditioning system. In option C, the sequence starts with the king valve, which serves as the main shut-off valve for the refrigerant, followed by the drier. The drier's purpose is to remove moisture and contaminants from the refrigerant, which is essential to prevent damage and ensure efficient operation of the system.

Next is the solenoid, which controls the flow of refrigerant based on the necessity of cooling. Following the solenoid, the sight glass is positioned to provide a visual indication of the refrigerant's condition (for example, it allows you to check for bubbles indicating the presence of air or moisture). Finally, the thermal expansion valve (TEV) is placed last, where it regulates the flow of refrigerant into the evaporator based on the cooling load demand.

This sequence ensures that the refrigerant is properly conditioned before entering the evaporator, helping maintain system efficiency and reliability. The arrangement emphasizes the importance of having the drier and solenoid positioned correctly in relation to other components to fulfill their roles effectively within the liquid line.