How often should a sprinkler system's dry pipe valve be exercised (opened and closed)?

A dry pipe valve in a sprinkler system is critical for controlling water flow and ensuring that the system functions properly in a fire event. Exercising the valve involves opening and closing it to check that it is operating correctly and to prevent corrosion and debris accumulation that can occur over time.

The established industry standard is to exercise the dry pipe valve annually. This regular maintenance helps ensure that the valve does not become stuck and remains functional when needed. By opening and closing the valve once a year, you can verify that the system is ready for use and that any necessary repairs or adjustments can be made in a timely manner.

This practice not only complies with fire safety regulations but also helps in maintaining the overall reliability of the sprinkler system. Keeping a routine of annual exercise for dry pipe valves helps prevent unexpected failures during an emergency, ultimately contributing to the effectiveness of fire protection measures.