What is the recommended pressure for pumping sprinkler systems in the absence of specific information?

In the context of pumping sprinkler systems, the recommended pressure of 150 psi serves as a general baseline when no specific pressure information is available. This pressure level is typically sufficient to ensure that the water can effectively reach the sprinkler heads and disperse adequately to cover the designated area.

The 150 psi standard helps to account for potential variations in elevation, friction losses through piping, and the performance requirements of various types of sprinkler heads. When a system is designed, engineers consider these factors to determine the necessary pressure to guarantee effective operation.

While lower pressures like 100 psi or 125 psi may function in some scenarios, they may not provide enough force to activate all sprinklers simultaneously, especially in larger systems with higher demands. Conversely, 200 psi might be excessive for many applications, which could lead to unnecessary wear on system components or unintended leaks. Therefore, the choice of 150 psi strikes a balance, ensuring enough water delivery without exceeding operational limits.