What is the maximum pressure of a 2½" hose valve on a standpipe system?

In a standpipe system, the maximum pressure of a 2½" hose valve is typically established at 100 psi. This standard is based on the National Fire Protection Association (NFPA) guidelines, which set requirements for pressure ratings to ensure functionality and safety in fire protection systems.

The 100 psi limit is intended to provide a balance that allows for effective firefighting capabilities without risking damage to the hose or fittings that might occur at higher pressures. When water is delivered through a standpipe, sufficient pressure is crucial for maintaining the adequate flow rate necessary for fire suppression while also ensuring that the equipment can effectively withstand the operational demands without failure.

Understanding these specifications helps sprinkler fitters and fire protection professionals design and maintain systems that meet safety regulations and performance expectations.