What is the ideal water pressure for effective sprinkler system operation?

The ideal water pressure for effective sprinkler system operation is generally considered to be around 150 PSI (pounds per square inch). At this pressure, the sprinkler system is able to efficiently distribute water over the intended area, ensuring adequate coverage and the necessary flow rate to suppress fires effectively.

Water pressure that is too low may result in insufficient flow and inadequate coverage, allowing the fire to spread. Conversely, water pressure that is too high can cause damage to the system itself, including the risk of bursting pipes or overly forceful spray that may not cover the target area effectively.

Maintaining the pressure around 150 PSI strikes a balance that optimizes both functionality and safety for fire suppression systems. This is why this pressure is commonly referenced in standards and practices for sprinkler systems.