Check valves should be inspected every ________________.

Check valves play a critical role in preventing backflow in a fire sprinkler system, ensuring that water flows in the correct direction and does not return back into the supply lines. Regular inspections of these components are essential to maintain system integrity and functionality.

The recommendation for inspecting check valves every 12 months aligns with standard maintenance practices that ensure the valves are operational and free from blockages or damage that could impede their function. Annual inspections provide ample opportunity to identify any wear and tear that may have developed over time, thereby ensuring the reliability of the fire protection system.

In comparison, more frequent inspections may not be necessary unless specific issues or concerns arise, making the annual schedule a balanced approach to upkeep without redundancy.