Underground Gate Valve use is permitted with a listed indicator post for underground use.

Underground Gate Valve use is permitted with a listed indicator post for underground use.

• A. Listed indicator post
• B. Remote supervisory position indication
• C. Antifreeze solution
• D. Drain valve

Answer: (A)

The key idea is that underground sprinkler shutoff valves must have a visible, guaranteed way to show their position. For underground gate valves, a listed indicator post is required because it provides a durable, above-ground visual indication of whether the valve is open or closed, despite being buried or in a harsh underground environment. This visibility is essential for quick, accurate valve status checks during inspections, maintenance, or emergencies, and the post must be specifically listed for underground use to ensure it can withstand soil, moisture, and vandalism risks. Using a remote supervisory indication would rely on electronics and wiring that may fail or not give an immediate local read, and it does not replace the required near-the-valve visual cue. An antifreeze solution has no relation to indicating valve position. A drain valve serves a different function related to draining the system and does not fulfill the requirement for visible, listed valve indication.

The key idea is that underground sprinkler shutoff valves must have a visible, guaranteed way to show their position. For underground gate valves, a listed indicator post is required because it provides a durable, above-ground visual indication of whether the valve is open or closed, despite being buried or in a harsh underground environment. This visibility is essential for quick, accurate valve status checks during inspections, maintenance, or emergencies, and the post must be specifically listed for underground use to ensure it can withstand soil, moisture, and vandalism risks.

Using a remote supervisory indication would rely on electronics and wiring that may fail or not give an immediate local read, and it does not replace the required near-the-valve visual cue. An antifreeze solution has no relation to indicating valve position. A drain valve serves a different function related to draining the system and does not fulfill the requirement for visible, listed valve indication.