DA Form 3943: Annual Dry Pipe Valve Inspection & Test – Dry pipe sprinkler systems are critical for fire protection in unheated buildings, warehouses, parking garages, and other areas where water-filled pipes risk freezing. The DA Form 3943 documents the required annual inspection and tripping test of dry pipe valves in US Army installations. This ensures the system activates reliably during a fire emergency.
What Is DA Form 3943?
DA Form 3943, titled Annual Dry Pipe Valve Inspection and Tripping Test, is an official US Army form (dated OCT 72, replacing an earlier version). It records the inspection and functional test of dry pipe valves in automatic sprinkler systems.
For use per TM 5-695 (with the Office of the Chief of Engineers as proponent), the form captures:
- Installation and building details
- Valve manufacturer, model, size, and year
- System specifics (number of sprinklers)
- Test data (air/water pressures, trip times)
- Condition of the valve interior
- Inspector certification and remarks
Download the official fillable DA Form 3943 PDF here: https://armypubs.army.mil/pub/eforms/DR_a/pdf/A3943.pdf
Why Annual Dry Pipe Valve Testing Matters?
Dry pipe systems hold pressurized air (or nitrogen) that keeps the valve closed until a sprinkler activates. The valve must open quickly to admit water. Annual testing verifies mechanical operation, detects issues like corrosion or obstructions, and confirms acceptable water delivery times.
NFPA 25 (Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems) drives these requirements:
- Annual partial-flow trip test (warm weather recommended)
- Full-flow trip test every 3 years (or after system alterations)
US Army facilities follow these standards alongside TM 5-695 for compliance, safety, and insurance purposes.
Key Components of the Dry Pipe Valve Tripping Test
The test confirms the valve trips properly and water reaches the inspector’s test connection within acceptable times.
Typical Annual (Partial) Trip Test Steps
- Record initial air and water pressures.
- Throttle the controlling valve (partially closed).
- Open the inspector’s test connection to release air.
- Record air pressure at trip point and time to trip.
- Measure time for water to reach the inspector’s test valve.
- Inspect valve interior (clapper, seat, rings) for corrosion, damage, or debris when resetting.
- Verify accelerator/exhauster operation if equipped.
- Perform main drain test and restore system protection.
Document everything on DA Form 3943, noting any faults on the reverse side.
How to Fill Out DA Form 3943?
Complete the form accurately during or immediately after the test:
- Header: Installation, location, building/system/valve numbers, number of sprinklers.
- Valve Data: Manufacturer, type/model, size, year manufactured.
- Test Data: Air pressure, water pressure, controlling valve position, trip/leak pressures, times.
- Valve Condition: Face/seat rings, corrosion, who tripped/reset the valve.
- Additional Checks: Accelerator/exhauster, alarms, protection restored, main drain test.
- Inspector: Name, date, signature; note if gauges were corrected.
Use the reverse for detailed remarks on any faulty conditions. Keep records for compliance audits.
Common Issues Found During Inspections
- Corrosion or incrustation on valve components
- Leaks at the valve when tripped
- Slow trip times or excessive water delivery delays
- Inoperative accelerators/exhausters
- Gauge inaccuracies
- Improper air pressures
Address issues promptly and document corrective actions.
Best Practices for US Army Fire Protection Teams
- Schedule tests during warm weather to allow full draining before freezing risks.
- Use qualified, trained personnel (often NICET-certified or equivalent fire protection specialists).
- Coordinate with facility managers to minimize operational disruption.
- Maintain a history of previous tests for trend analysis.
- Ensure spare parts and tools are available on-site.
- Integrate with overall NFPA 25 compliance program (quarterly/annual inspections).
Compliance and Regulatory Notes
US Army installations must maintain fire protection systems per Army regulations, NFPA standards, and local authority having jurisdiction (AHJ) requirements. Proper documentation on DA Form 3943 supports readiness inspections, reduces liability, and helps prevent system failure in emergencies.
For the latest guidance, refer to current editions of NFPA 25, TM 5-695, and Army publications.
Download DA Form 3943: Official PDF from Army Publishing Directorate
Regular testing keeps your dry pipe sprinkler systems mission-ready and life-saving. Contact your installation fire protection engineer or certified contractor for assistance with inspections and testing.