Question 931 Deck General

The correct answer is A) closed, opened a half turn, and then closed again. This is the correct approach to ensure proper seating when closing a valve on a tank. Opening the valve a half turn after closing it allows the valve seat to properly reset and seal against the valve body, preventing potential leaks or damage to the valve. Closing the valve all the way against the stop without this intermediate step can lead to improper seating and potential issues. The other options are not the correct procedure. Option B (set up as tight as possible by hand) does not allow for the proper valve seat reset. Option C (closed against the stop and the locking pin inserted) skips the crucial half-turn step. Option D (set up tight using a valve wrench) also does not incorporate the half-turn procedure.