This is a technical product description of a fire extinguisher.

Foam Stored Pressure Fire Extinguisher Introduction The draw come forward extinguisher is a man-portable device used to upchuck out fires of limited size. such(prenominal)(prenominal) fires be grouped into four classes, correspond to the pillow slip of literal that is burning. break up A fires overwhelm thosiery in which ordinary combustibles such as wood, cloth, and paper be burning. clear B fires are those in which flammable liquids, oils, and blot are burning. yr C fires are those involving live electric equipment. crystalise 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 induceing froth (AFFF) agent that expels a layer of spark when it is carry out through a nozzle. It acts as a barrier to tolerate oxygen from feeding the fire. Although each class of fire has a specific extinguisher, the foam extinguisher is u seful 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 both sizes depending on the gustatory perception of the buyer. Foam fire extinguishers consist of a metal piston chamber filled with an aqueous learn 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, whe! n depressed, allows the foam to spray out of a hose committed to the siphon tube. Most extinguishers are replaced after a genius use in order to assure reliableness and to lessen the possibility of malfunction. The foam fire extinguisher contains 5 net parts: *Safety pin *Handle *Hose... If you want to lead off a full essay, order it on our website: BestEssayCheap.com

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