Engine Refrigeration (Supplementary) USCG Question #430 (Set 6)

In a refrigeration system, the valve shown in the illustration is used for what purpose? GS-RA-14 Illustration GS-RA-14: the U.S. Coast Guard has not released this illustration.

Official USCG Answer & Rule Citation

Correct Answer: Option D — head pressure regulating valve

The illustrated device is a head pressure regulating valve, utilized in marine refrigeration systems to maintain adequate condensing pressure during low ambient temperature operations by restricting condenser outlet flow.

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