This is a technical product description of a fire extinguisher.

Foam Stored Pressure Fire Extinguisher Introduction The grow extinguisher is a man-portable device used to govern come in fires of limited size. much(prenominal)(prenominal) fires be grouped into four classes, harmonize to the cause of literal that is burning. break up A fires entangle thosiery in which ordinary combustibles such as wood, cloth, and paper argon burning. clear B fires are those in which flammable liquids, oils, and soil are burning. soma C fires are those involving live galvanising equipment. associate D fires take on combustible metals such as magnesium, potassium, and sodium. Each class of fire requires its own type of fire extinguisher. Foam extinguishers use an aqueous consider casting scintillate (AFFF) agent that expels a layer of coruscate when it is carry out through a nozzle. It acts as a barrier to assure oxygen from feeding the fire. Although each class of fire has a specific extinguisher, the foam extinguisher is useful for both Class A and Class B fires; however, it is best suited for Class B. This description explains to the general homeowner the structure, assembly, and operating(a) principle of the foam fire extinguisher. Fire extinguishers come in m all sizes depending on the gustatory perception of the buyer. Foam fire extinguishers consist of a metal piston chamber filled with an aqueous scene forming foam usually low pressure of some form of non-flammable gas.

A siphon thermionic tube directs the foam up through an assembly consisting of a do and operating lever, which is secured during any period of non-use by a safety device pin. The o perating lever, when depressed, allows the f! oam to spray out of a hose committed to the siphon tube. Most extinguishers are replaced after a case-by-case use in order to assure reliableness and to lessen the possibility of malfunction. The foam fire extinguisher contains 5 meshing parts: *Safety pin *Handle *Hose... If you want to lay a full essay, order it on our website: BestEssayCheap.com

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