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? Illustration GS-RA-06

Correct Answer: Option B — B

Valve configuration B incorporates external equalization to compensate for the 2 psi evaporator pressure drop, along with externally adjustable superheat and a replaceable power element head for ease of maintenance in accordance with marine engineering standards.