In a large refrigeration system having more than one evaporator, a king solenoid valve should be installed in what location?

Correct Answer: Option D — just after the receiver

The king solenoid valve, or liquid line solenoid, must be located immediately downstream of the receiver to positively isolate liquid refrigerant during the pump-down cycle. This prevents liquid slugging of the compressor and controls refrigerant flow to multiple evaporators effectively.