What is the maximum allowable discharge pressure?

The maximum allowable discharge pressure, particularly in the context of fire department operations, is set to ensure safety and to prevent equipment failure. In many fire service applications, including the Chicago Fire Department, the maximum allowable discharge pressure is typically 150 psi. This standard is established to protect hoses, couplings, and pumps from excessive pressure that could lead to failures during emergency operations.

This pressure level allows firefighters to effectively manage water supply and distribution while maintaining the integrity of the equipment used in fire suppression efforts. Knowing the maximum discharge pressure is critical for firefighters, as operating above this threshold can not only damage the firefighting equipment but can also pose serious risks during firefighting activities.