In connecting to a sprinkler system, what should the initial pump pressure be?

In the context of connecting to a sprinkler system, the initial pump pressure is critical for ensuring that the system operates effectively. A pressure of 150 psi is commonly recommended for this scenario because it typically provides adequate head pressure necessary to distribute the water evenly through the sprinkler heads.

This pressure helps in overcoming friction losses in the pipes and ensures that the water reaches all parts of the system, especially in larger buildings where distances might be greater. Adequate pressure is crucial for effective fire suppression, ensuring that the water can reach and extinguish fires as designed in the sprinkler system's specifications.

The other pressure options tend to either be too low, which could lead to insufficient water distribution, or too high, which might exceed the system's operational parameters and potentially cause damage or leakage in the system.