What engine pressure is typically used to start pumping into a sprinkler system?

In the context of starting to pump into a sprinkler system, the use of 150 psi is commonly recommended as it provides a balance of pressure that can effectively activate the system while ensuring adequate water flow for firefighting purposes. This pressure is generally sufficient to overcome the initial resistance of the sprinkler system's pipes and valves, helping to ensure that an adequate amount of water reaches the sprinkler heads promptly in the event of a fire.

This starting pressure aligns with established protocols and industry standards, as it helps to maximize the system's effectiveness while maintaining safety for fire personnel and the integrity of the system. Fire departments often adopt this practice to ensure a consistent and reliable response in various fire scenarios, making 150 psi a standard choice for operations involving sprinkler systems.