Refrigeration & Air Conditioning USCG Question #986 (Set 20)

Which of the following electrically operated refrigeration system valves would be most appropriate for use as a 2 position diverting hot gas bypass solenoid valve? Illustration GS-RA-19 Illustration GS-RA-19: the U.S. Coast Guard has not released this illustration.

Official USCG Answer & Rule Citation

Correct Answer: Option B — B

Two-position diverting hot gas bypass solenoid valves require robust seating and rapid electrical actuation to divert compressor discharge gas directly into the low-side for capacity control or defrosting, matching the internal porting configuration designated by illustration B.

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