What should be located at the water supply control valve for automatic or semiautomatic standpipe systems?

What should be located at the water supply control valve for automatic or semiautomatic standpipe systems?

• A. The hydraulic design information sign
• B. A gate valve
• C. A pressure gauge
• D. A check valve

Answer: (A)

The thing that should be located at the water supply control valve for automatic or semiautomatic standpipe systems is a hydraulic design information sign. This sign provides essential system data—such as the required flow, residual pressure, and key hydraulic parameters—so firefighters and operators know at a glance what the system is designed to deliver and what pressures to expect when the valve is opened. Placing this information right at the water supply control valve makes it readily available during operation, testing, or firefighting, ensuring the system is used within its designed capacity. Other items like a gate valve, a pressure gauge, or a check valve serve functional roles in the system, but they do not convey the design-data reference that the sign provides.

The thing that should be located at the water supply control valve for automatic or semiautomatic standpipe systems is a hydraulic design information sign. This sign provides essential system data—such as the required flow, residual pressure, and key hydraulic parameters—so firefighters and operators know at a glance what the system is designed to deliver and what pressures to expect when the valve is opened. Placing this information right at the water supply control valve makes it readily available during operation, testing, or firefighting, ensuring the system is used within its designed capacity. Other items like a gate valve, a pressure gauge, or a check valve serve functional roles in the system, but they do not convey the design-data reference that the sign provides.