What pressure reading should be maintained on the discharge gauge when charging a sprinkler system?

Maintaining a pressure reading of 150 psi on the discharge gauge when charging a sprinkler system is important for several reasons. This pressure level ensures that the system operates effectively to deliver water to all areas of the system when activation occurs. A minimum pressure of 150 psi provides adequate force to propel water through the pipes and into the sprinkler heads, promoting optimal coverage and reducing the risk of pressure drops that can lead to ineffective firefighting efforts.

Additionally, the 150 psi mark accounts for system losses that may occur due to friction in the pipes and fittings, ensuring reliable performance under varying conditions. In Florida, where building codes often require robust fire suppression systems, maintaining this pressure helps ensure compliance with fire safety regulations and enhances the overall safety of the structures protected by these systems.