Refrigeration & Air Conditioning USCG Question #940 (Set 18)

Which of the following statements is true concerning the illustrated gauge manifold set? Illustration GS-RA-01

USCG Exam Illustration GS-RA-01
USCG Examination Diagram: Illustration GS-RA-01
Official USCG Answer & Rule Citation

Correct Answer: Option D — Closing the valve labeled "G" isolates the hose labeled "H" from the hose labeled "J".

Closing valve G on a standard two-valve gauge manifold directly interrupts the flow path between the center service hose H and the respective side port or gauge J, isolating them completely during charging or evacuation procedures.

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