In the multi-evaporator refrigeration system shown in the illustration, what is the proper name for the valve labeled "29"? GS-RA-12 Illustration GS-RA-12: the U.S. Coast Guard has not released this illustration.
Official USCG Answer & Rule Citation
Correct Answer: Option C — chill box thermostatic expansion valve
Component "29" in standard multi-evaporator marine refrigeration diagrams is the chill box thermostatic expansion valve, responsible for metering liquid refrigerant into the chill box evaporator coil based on superheat.
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