Valves controlling water supply must be listed for what purpose.

Valves controlling water supply must be listed for what purpose.

• A. Listed Indicating Valves
• B. Drain Valves
• C. Test Valves
• D. Wafer-Type Valves

Answer: (A)

Valves that control the water supply to a sprinkler system must be listed indicating valves so you can clearly see the valve’s position and know whether water can reach the system. The listing ensures the valve is designed for fire-protection service and includes an approved means to indicate whether it’s open or closed, often with a visible position indicator or tamper indication. This visibility is essential for quick verifications during inspections, maintenance, or a fire emergency, preventing situations where the system is shut off unknowingly or left unable to supply water. Drain valves and test valves are important components, but the requirement focuses on the main water-supply valves and their ability to convey their status reliably. Wafer-type refers to a valve style and does not address the requirement to provide a listed indicating feature.

Valves that control the water supply to a sprinkler system must be listed indicating valves so you can clearly see the valve’s position and know whether water can reach the system. The listing ensures the valve is designed for fire-protection service and includes an approved means to indicate whether it’s open or closed, often with a visible position indicator or tamper indication. This visibility is essential for quick verifications during inspections, maintenance, or a fire emergency, preventing situations where the system is shut off unknowingly or left unable to supply water.

Drain valves and test valves are important components, but the requirement focuses on the main water-supply valves and their ability to convey their status reliably. Wafer-type refers to a valve style and does not address the requirement to provide a listed indicating feature.