Which one of the following describes the function and use of the backseat on a manual valve?
A. Removes pressure from the packing/stuffing box and is typically used to isolate the stuffing box for valve repacking.
B. Removes pressure from the packing/stuffing box and is typically used when needed to isolate packing leakage.
C. Acts as a backup in case the primary seat leaks and is typically used during system isolation for personnel protection.
D. Acts as a backup in case the primary seat leaks and is typically used when needed to prevent the primary seat from leaking excessively.
Show Answer
Answer: B
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