Firehose
From Wikipedia, the free encyclopedia
- For the band, see Firehose (band).
A firehose is a thick, high-pressure hose used to carry water or other fire retardant (such as foam) to a fire to extinguish it. Outdoors, it is attached either to a fire engine or a fire hydrant. Indoors, it can be permanently attached to a building's standpipe or plumbing system.
The usual working pressure of a firehose can vary between 8 bar and 20 bar ((0.8 to 2.0 MPa), while its bursting pressure can be up to 63 bar (6.3 MPa). (This level of pressure emitted by the hose can actually break in a weaker brick wall.)
This high pressure also allows the fire hose to serve as an effective form of crowd control, including most notably by Bull Connor in the Deep South of the United States against civil rights protestors.
The first fire hose was invented by Jan Van der heyden
