Deluge gun
equipment used in firefighting
A deluge gun, fire monitor, master stream or deck gun is an aimable, controllable high-capacity water jet used for manual firefighting or automatic fire protection systems. Deluge guns are often designed to accommodate foam that has been injected into the upstream piping.
Installation
Deluge guns are often fitted to fire boats, tug boats, and atop large fire trucks for use in manual firefighting, where they can be aimed and operated by one firefighter and are used to deliver water or foam from outside the immediate area of the fire. Deluge guns are sometimes installed in fixed fire protection systems to protect high hazards, such as aviation hangars and helicopter landing pads. Similarly, facilities with highly flammable material such as oil refineries may have permanently-installed deluge guns. Most apparatus-mounted deluge guns can be directed by a single firefighter, compared to a standard fire hose that normally requires several. Deluge guns can be automatically positioned for fixed systems or may have portable designs. The latter option enables a firefighter to set up the gun to apply water to a blaze, before leaving it in place to attend to other tasks.
Capacity
A deluge gun can discharge 7,500 litres per minute (1,981 US gal/min; 125 L/s) or more. A master stream is a fire service term for a water stream of 1,250 litres per minute (330 US gal/min; 21 L/s) or greater.
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This entry incorporates text from “Deluge gun” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.