Which of the following illustrated thermal expansion valves would be appropriate to use on an evaporator coil with a 2 psi pressure drop, where externally adjustable superheat and a replaceable power element are both desired? GS-RA-06

Correct Answer: Option C — B

Valve design "B" incorporates external equalization required for low pressure-drop coils, along with an adjustable superheat spring and a bolted, replaceable power element assembly for marine maintenance convenience.