What is the maximum flow rate for a 2 1/2” smoothbore nozzle with a 1 1/8” tip?

The maximum flow rate for a 2 1/2” smoothbore nozzle with a 1 1/8” tip is typically around 260 gallons per minute (gpm). This figure is derived from standard fire flow calculations and nozzle design standards, which take into account the nozzle size, tip size, and the pressure available at the nozzle.

In this specific case, the 2 1/2” designation indicates the diameter of the inlet, while the 1 1/8” tip size relates to the orifice through which the water exits. The flow rate can be estimated using the formula that incorporates the area of the nozzle tip and the pressure at which water is pumped through it. The standard practice, along with empirical testing, confirms that a smoothbore nozzle of this size, when operated under optimal conditions, achieves a maximum flow rate of approximately 260 gpm, making it suitable for effective fire suppression in various scenarios.

Understanding this flow rate is crucial for fire response teams to ensure they are delivering adequate water supply for extinguishing fires while maintaining safety and efficiency in operations.