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.

Correct Answer: Option B — chill box thermostatic expansion valve

Valve 29 in multi-evaporator systems is a thermostatic expansion valve controlling refrigerant flow into the chill box evaporator based on bulb temperature and superheat, maintaining proper thermal performance across medium-temperature refrigerated spaces.