Which handline size is generally considered to flow 250 gpm?

The 2.5-inch attack hose is widely recognized for its ability to flow approximately 250 gallons per minute (gpm) when operated at the appropriate pressure and with correctly configured nozzles. This size of hose strikes a balance between manageability for firefighters and the volume of water it can deliver, making it a common choice for structural firefighting scenarios where substantial water delivery is necessary.

In firefighting operations, the flow rate is a critical factor in effectively combating fires. The 2.5-inch hose can efficiently maintain the required flow while still being relatively lightweight compared to larger diameters. Using this size of hose provides the necessary water volume to suppress fires effectively, especially in building structures.

Smaller hoses, such as the 1.5-inch, typically deliver lower flow rates, while larger hoses, such as the 3-inch, may exceed the usual requirements for standard firefighting operations unless significantly more water is needed. Thus, the 2.5-inch attack hose is optimal for its specific flow rating, aligning with the demands of the firefighting environment.