Which statement is true about identification signs on valves?

• A. Indicate the valve size
• B. Identify the portion served by the valve
• C. Show the installation date
• D. Indicate the valve manufacturer's name

Answer: (D)

Identification signs on valves are meant to tell you who made the valve. Knowing the manufacturer helps maintenance staff obtain the correct replacement parts and ensure any service or upgrades match the exact model and specifications. The other details—valve size, which portion of the system the valve serves, and the installation date—are handled in other ways (size is usually stamped on the valve body; the zone or portion served is shown in system labels or diagrams; installation date is tracked in logs or on separate tags). So the sign’s primary purpose is to identify the valve’s manufacturer.