What is an alarm valve or inspector's test valve?

What is an alarm valve or inspector's test valve?

• A. A valve that drains the system during testing.
• B. A valve used to simulate a waterflow condition during testing so alarms are tested without discharging the system.
• C. A valve to regulate pump speed.
• D. A valve to isolate a zone during maintenance.

Answer: (B)

An alarm valve or inspector's test valve is a device used to create a controlled waterflow for testing the system’s alarm devices. Opening this valve simulates movement of water through the sprinkler lines, which activates the waterflow alarm and related supervisory circuitry so you can verify they operate correctly. The test flow is directed through a dedicated test line or to a drain, so the rest of the system stays charged and isn’t discharged. It’s not used to regulate pump speed, isolate zones, or simply drain the system—the purpose is to test alarms by simulating actual flow.

An alarm valve or inspector's test valve is a device used to create a controlled waterflow for testing the system’s alarm devices. Opening this valve simulates movement of water through the sprinkler lines, which activates the waterflow alarm and related supervisory circuitry so you can verify they operate correctly. The test flow is directed through a dedicated test line or to a drain, so the rest of the system stays charged and isn’t discharged. It’s not used to regulate pump speed, isolate zones, or simply drain the system—the purpose is to test alarms by simulating actual flow.