What is the minimum pressure requirement for a sprinkler system as per NFPA 13?

The minimum pressure requirement for a sprinkler system, as outlined in NFPA 13, is crucial for ensuring that the system can effectively deliver water to suppress a fire. According to NFPA 13, the correct minimum pressure at the sprinkler head must be at least 7 psi. This pressure is necessary to ensure proper sprinkler operation, including effective water distribution and coverage for fire suppression.

When the pressure is too low, the sprinkler may not function as intended, leading to inadequate fire protection. The specification of 7 psi serves as a standard benchmark to ensure reliability and effectiveness across various installations. This requirement aligns with the need to maintain proper flow rates and pressure balance in the overall sprinkler system design.

Understanding this minimum pressure requirement helps practitioners ensure compliance with safety standards and optimize the performance of fire protection systems.