How often shall deluge valves be trip tested?

• A. Annually
• B. Every three years
• C. Every five years
• D. Only after changes to the system

Answer: (A)

Deluge valves must be trip tested annually to ensure reliable release of water through the entire deluge system when a fire signal is given. This frequent check verifies that the release mechanism actually operates, that water will flow to all sprinklers in the system, and that the associated alarms and controls respond correctly. It also gives you the chance to observe, reset, and repressurize the system after the test, confirming everything returns to normal readiness. Waiting longer than a year increases the risk that mechanical wear, corrosion, or sticking components could cause a failure during an actual event. So, annual testing provides timely confirmation of reliability without unnecessary disruption.