Refrigeration & Air Conditioning USCG Question #849 (Set 15)

Which of the illustrated valves is used to gain access to a hermetically sealed system and features a Schrader core valve which is unseated by the core depressor of the hose fitting when attached? Illustration GS-RA-67 Illustration GS-RA-67: the U.S. Coast Guard has not released this illustration.

Official USCG Answer & Rule Citation

Correct Answer: Option C — C

Access valve design incorporates a Schrader core valve identical to automotive tire stems, which unseats automatically via internal depressors inside charging hose fittings to permit gauge connection and pressure reading.

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