Refrigeration system isolation valves are specially designed with a back-seat, as well as a front-seat. For what purpose are these valves designed in this way?
A
allow for operation as a suction or discharge valve
B
permit repacking the valve stem under pressure without shutting down
C
allow for operation as a liquid or vapor valve
D
allow for removal and replacement of the valve without shutting down
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Question 1 / 205eccef9dbacbc34ba4d45f72
Question 1 of 205eccef9dbacbc34ba4d45f72
Refrigeration system isolation valves are specially designed with a back-seat, as well as a front-seat. For what purpose are these valves designed in this way?
Refrigeration system isolation valves are specially designed with a back-seat, as well as a front-seat. For what purpose are these valves designed in this way?