At what pressure should sprinkler systems generally be fed?

Sprinkler systems are generally designed to be operational at a pressure around 150 psi. This pressure is established as a standard to ensure that the system can effectively deliver enough water flow to control or extinguish a fire. A pressure of 150 psi allows for sufficient water distribution through the system’s piping and sprinkler heads, which is critical for maximizing the coverage area and response time during a fire incident.

Pressure variations may exist depending on specific design criteria or local codes, but 150 psi is a widely accepted baseline that helps maintain the reliability and efficacy of sprinkler systems. Lower pressures may not provide adequate water flow, while higher pressures can cause undue stress on the system components, potentially leading to failures. Therefore, the selection of 150 psi ensures the balance needed for effective fire suppression while maintaining equipment integrity.