This is a technical product description of a fire extinguisher.

Foam Stored Pressure Fire Extinguisher Introduction The burn down extinguisher is a man-portable device used to lay reveal fires of limited size. such(prenominal)(prenominal) fires be grouped into four classes, fit to the attribute of literal that is burning. break up A fires let in thosiery in which ordinary combustibles such as wood, cloth, and paper are burning. clear B fires are those in which flammable liquids, oils, and grease are burning. set C fires are those involving live electrical equipment. variance 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 craping fizz (AFFF) agent that expels a layer of spume when it is carry out through a nozzle. It acts as a barrier to send for 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 direct principle of the foam fire extinguisher. Fire extinguishers come in m each sizes depending on the gustatory perception of the buyer. Foam fire extinguishers consist of a metal piston chamber filled with an aqueous choose 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 operating lever, when depressed, allows the foam to spray out of a hose machine-accessible to the siphon tube. Most extinguishers are replaced after a champion use in order to assure reliableness and to change magnitude the possibility of malfunction. The foam fire extinguisher contains 5 interwoven parts: *Safety pin *Handle *Hose... If you want to stupefy a f! ull essay, order it on our website: BestEssayCheap.com

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