If the needle and seat assembly is excessively eroded, the valve cage assembly can be replaced. In replacing the original valve cage assembly rated at 1/2 tons, what would be the result if the replacement valve cage was oversized at 5 tons? Illustration GS-RA-07 Illustration GS-RA-07: the U.S. Coast Guard has not released this illustration.
Official USCG Answer & Rule Citation
Correct Answer: Option A — The expansion valve would hunt excessively, alternately starving and over feeding the evaporator coil.
Under USCG National Maritime Center examination standards, the accepted correct answer is: The expansion valve would hunt excessively, alternately starving and over feeding the evaporator coil..
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.