The required air pressure in a dry system should always be monitored for compliance above which pressure?

In dry pipe sprinkler systems, maintaining the appropriate air pressure is crucial for ensuring the system functions correctly, especially since these systems rely on pressurized air to keep water at bay until activation. The National Fire Protection Association (NFPA) guidelines specify that the minimum air pressure in the system should typically be maintained above 10 psi. This pressure sets a baseline to ensure that the system is ready for immediate water release upon activation, providing enough force to hold the clapper valve closed until a sprinkler is activated.

Monitoring this pressure is essential for operational reliability—if the pressure falls below this threshold, the system may not respond effectively in a fire situation. Keeping the air pressure consistent and above the minimum requirement helps prevent unwanted water discharge and ensures that the system can deliver water quickly and effectively when needed. This regulatory standard underscores the importance of regular maintenance checks on dry sprinkler systems to ensure safety and compliance with fire protection regulations.