What is the flow rate (GPM) and nozzle pressure (NP) for a 2" master stream tip?

The flow rate and nozzle pressure for a 2-inch master stream tip can be determined using standard formulas that consider the size of the nozzle and the required operating conditions. For a 2-inch master stream, a typical flow rate of 1000 gallons per minute (GPM) at a nozzle pressure (NP) of 80 pounds per square inch (psi) is commonly accepted in fire service practice. This combination allows for effective delivery of water to extinguish fires while maintaining adequate pressure for stream reach and penetration.

In this case, the choice of 1000 GPM at 80 psi represents a balance between the water flow necessary for effective firefighting and the pressure required to achieve optimal stream performance. It aligns with established guidelines and training standards for master streams, ensuring that firefighters can reliably operate the equipment in various fire conditions. The nozzle's design and the physics of fluid dynamics facilitate effective firefighting with this flow and pressure combination, making it the ideal answer in this context.