Opening a post indicator valve until tension is felt is primarily to verify what?

Opening a post indicator valve until tension is felt is primarily to verify what?

• A. The rod remains attached to the valve
• B. The valve is fully open
• C. The locking mechanism is engaged
• D. The rod has not become detached from the valve

Answer: (D)

Opening a post indicator valve until tension is felt checks that the mechanical linkage between the valve and its indicator rod is still intact. Feeling tension confirms the rod remains attached to the valve stem and is able to transmit valve movement to the indicator. If the rod were detached or broken, you wouldn’t feel that resistance, and the indicator could give a false sense of the valve’s position. This test is about confirming linkage integrity so the status indication will be reliable, not about whether the valve is fully open or whether any locking mechanism is engaged.

Opening a post indicator valve until tension is felt checks that the mechanical linkage between the valve and its indicator rod is still intact. Feeling tension confirms the rod remains attached to the valve stem and is able to transmit valve movement to the indicator. If the rod were detached or broken, you wouldn’t feel that resistance, and the indicator could give a false sense of the valve’s position. This test is about confirming linkage integrity so the status indication will be reliable, not about whether the valve is fully open or whether any locking mechanism is engaged.