Fire Streams
Fire streams are used to reduce the heat from a fire and provide protection to firefighters and exposures. They are one of the most important weapons in a firefighter's arsenal. Because of this it is important to understand how they work and what influences them.A fire stream is a stream of water between the fire nozzle and the target. It is not possible to provide a more precise definition of a fire stream since different fire streams are created for specific purposes.
It is important to remember that when a fire stream leaves a fire nozzle it is influenced by velocity, gravity, wind, and friction with the air.
The condition of the stream prior to leaving the nozzle is affected by the fire pump operating pressure, nozzle design, nozzle adjustment, and the condition of the nozzle orifice.