Refrigeration & Air Conditioning USCG Question #221 (Set 4)

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

Official USCG Answer & Rule Citation

Correct Answer: Option B — just after the receiver

Often termed the king valve, the liquid line shutoff valve is located immediately downstream of the receiver outlet. This position allows complete isolation of the liquid line and evaporators during servicing or pump-down.

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