3-Year Dry Sprinkler System Trip Test
The 3-Year Trip Test simulates a real-world fire emergency to make sure water reaches your sprinkler heads in time. Required every 3 years under NFPA 25, this test confirms your dry pipe valve activates correctly, delivers water to the farthest sprinkler within code-required time, and resets as it should.
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why trip testing matters
Dry sprinkler systems protect areas where wet systems would freeze — but if your trip test is overdue, you might not discover a fault until it’s too late. A failed trip test could mean no water during a fire, even if your alarms activate.
We simulate fire conditions every three years to:
✓ Verify your dry valve opens on time
✓ Confirm water reaches the last sprinkler head within required time
✓ Identify blockages, mechanical failures, slow response
✓ Catch reset or alarm issues before they impact safety​​
What the 3-Year Trip Test Entails
Activation Time Measurement
We measure how long it takes for the dry valve to trip and deliver water to the furthest sprinkler head. This ensures your system meets the critical response time needed in an emergency.
System Draining & Air Pressure Adjustment
Any residual water is fully drained to prevent future freezing. The system is then repressurized to the correct level to keep everything running optimally.
Valve Trip
We manually trip the valve and track water delivery time to verify proper function and identify any performance delays or issues.
Inspection of Components
Our techs check key system components like the dry valve, pressure switches, and air alarms to make sure they’re working correctly and ready for action.
Restoration of System
After testing, we return the system to normal operating condition so it’s fully prepped for real-world protection.
Standards Followed
All testing is completed per NFPA 25 guidelines for inspection, testing, and maintenance of water-based fire protection systems. The 3-year trip test is a code requirement for all dry systems.
Contact Us Today
Ready to experience the Alltron Systems difference? Contact us today for a free consultation or to learn more about how we can assist you in maintaining a safe and compliant environment.
