What is required for systems with multiple control valves?

• A. Signs are required.
• B. Signs are prohibited.
• C. Signs are required for systems with multiple control valves.
• D. Signs are optional.

Answer: (C)

When a sprinkler system has more than one control valve, signs are required to identify which valve controls which portion of the system. This helps responders and maintenance staff quickly locate the correct valve, understand the area or zone it serves, and avoid shutting off the wrong section during testing or an incident. The rule is specific to systems with multiple valves; if there’s only a single valve, this signage requirement isn’t triggered. Signs should be placed at or near each valve and clearly describe the valve’s area of control. Options suggesting signs are prohibited or optional don’t fit the standard, and a broad statement that signs are always required misses the necessary condition of multiple control valves.