What psi should be maintained for Sprinkler Systems?

Sprinkler systems typically require a pressure of 150 psi to ensure effective operation. This pressure is crucial for activating the sprinkler heads at the appropriate time to suppress or control fires. The 150 psi standard is designed to accommodate the various factors involved in system performance, including the adequate coverage of water during an incident, pressure losses due to friction in the pipes, and the head heights of the sprinklers.

Maintaining the correct pressure is vital for ensuring that the water distribution is sufficient to protect the designated area effectively. Insufficient pressure can lead to inadequate water supply, while excessively high pressure can cause mechanical failures or damage to the system.

In relation to the other pressure levels provided, 100 psi may not provide enough force for proper functionality in many systems, while 200 psi and 250 psi exceed the typical requirements, which may not only be unnecessary but can also introduce risks of over-pressurization leading to system failures or leaks. Thus, 150 psi is recognized as the optimal pressure for reliable operation of sprinkler systems.