What is the acceptable range for the sprinkler system water pressure during a test?

The acceptable range for sprinkler system water pressure during a test should ideally match the original design pressure. This is important because the original design pressure is established based on calculations and standards that ensure the system will operate effectively under intended conditions. A system that operates at the specified design pressure will function as intended, ensuring adequate water flow and pressure to suppress fires effectively when needed.

If the pressure is lower than the original design pressure, it may indicate potential issues such as leaks or restrictions in the system that could compromise performance. Conversely, exceeding the original design pressure could put undue stress on the components of the system, potentially leading to failures or excessive wear. Therefore, ensuring that the test pressure matches the original design pressure is crucial for maintaining system integrity and reliability.

Industry standards provide guidance on acceptable pressure ranges, but the primary focus during testing is that the pressure aligns with the specifications determined during the system design process. This alignment ensures that all factors considered during the design phase—such as the building layout, sprinkler head specifications, and anticipated fire scenarios—are taken into account for effective fire protection.