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Applied using eductor or compressed air foam system (CAFS) and pumped through fire hose to a foam nozzle (or sometimes a less-effective fog nozzle). Attack hose (Attack line) A use classification of a fire fighting hose connected to output of a pump or other pressure source (e.g., gravity). Fire hose used to apply water or other fire fighting ...
Water Nozzle - Short, straight nozzle [3] Foam Nozzle - 2 inches (50 mm) nozzle that mixed water and AFFF concentrate [3] Bayonet Nozzle - Long pole, used to stab an aircraft's skin and apply a mist to the interior [3] All were equipped with a quick-release adapter and had variable volumes selected by twisting the end of the attachment.
Keeping the nozzle will result in wetter foam but longer range. Cutting the nozzle will result in an expanded, dry foam but will lack the range of the standard water nozzle. CAFS extinguishers can also be fitted with air aspirators, commonly used on AFFF and FFFP foam extinguishers, which will result in a more expanded foam but will lack the ...
A fire hose (or firehose) is a high-pressure hose that carries water or other fire retardant (such as foam) to a fire to extinguish it. Outdoors, it attaches either to a fire engine, fire hydrant, or a portable fire pump. [1] Indoors, it can permanently attach to a building's standpipe or plumbing system.
Application is from twin hose lines connected together at the nozzle, one flows the dry chemical agent and the other foam. Twin agent systems are also used in fixed nozzles of vehicles (i.e. AR-FF vehicles) or ground mounted monitors in high hazard locations in facilities storing or producing flammable liquids. See Airport crash tender
A fog nozzle. A fog nozzle is a firefighting hose spray nozzle that breaks its stream into small droplets.By doing so, its stream achieves a greater surface area, and thus a greater rate of heat absorption, which, when compared to that of a smoothbore nozzle, speeds its transformation into the steam that smothers the fire by displacing its oxygen.
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Firefighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, thus achieving suppression of the combustion. Firefighting foam was invented by the Moldovan engineer and chemist Aleksandr Loran in 1902. [1] The surfactants used must produce foam in concentrations of ...