The most commonly used master stream devices flow between:

Master stream devices are designed to deliver large volumes of water to combat significant fire scenarios, and the flow capacities of these devices are critical for effective firefighting operations. The range of 350-1500 gallons per minute (gpm) is typical for most master stream applications, as this flow rate allows firefighters to effectively tackle large fires, particularly in industrial, commercial, or residential environments where higher volumes of water are necessary to suppress flames and protect surrounding structures.

The flow range also enables operators to adjust their strategy based on the size and intensity of the fire, providing versatility in firefighting operations. Flow rates below 350 gpm may not be adequate for significant fire suppression, while flow rates above 1500 gpm, despite being powerful, are often beyond the needs of most fire incidents and can lead to unnecessary water usage and potential runoff issues.

Understanding these flow ranges helps firefighters select the appropriate master stream devices for the circumstances they encounter and enhances their overall effectiveness in fire suppression efforts.