Flows over what amount of gallons per minute are considered too difficult to be delivered from a hand line due to nozzle reaction?

The threshold for flows that become too difficult to be effectively managed with a hand line due to nozzle reaction is typically around 350 gallons per minute. At this flow rate, the reaction force generated by the nozzle can create significant challenges for the firefighter operating the line. The higher the flow rate, the more difficult it becomes to control the nozzle, which can lead to decreased effectiveness in directing water at the fire and increased risk of losing control of the line.

This flow rate takes into account the physical demands on the firefighter and the dynamics of handling the hose under pressure. While lower flow rates can often be managed, exceeding this threshold significantly impacts the ability to operate safely and effectively. Therefore, 350 gallons per minute is recognized as a critical point beyond which using a hand line becomes impractical due to the reaction force involved.