To verify the position of a fully open manual valve in an operating system, the operator should operate the valve handwheel…
A. in the open direction until the valve is backseated one-half turn.
B. to fully close the valve, then open the valve to the fully open position.
C. in the closed direction, then open the valve to its previously open position.
D. to open the valve until it touches the backseat, then close the valve to the desired position.
Show Answer
Answer: C
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