Different Types of Fire Extinguishers

Foam Extinguishers: This is a foam fire extinguishers that results from the chemical reaction of two solutions one is baking soda with foam stabilizing agent dissolved in water, placed in the outer compartment inside the machine, the other solution is aluminum sulphate dissolved in water and placed in the inner cylinder. This reaction produces carbon dioxide in bubbles, their power of suffocation can successfully use this foam to extinguish fires in category "A" and "B".

Soda-Acid Extinguisher: The fire extinguishers is water containing a small amount of sodium sulphate. The effect of the chemical reaction between baking soda and sulfuric acid load is to produce carbon dioxide gas at sufficient pressure to release the water content. This action is almost equal to that of ordinary water, because the gas does not help these fire extinguishers mostly falls into the category "A".

Anti Freezing Liquid: The application of these is the same as the tap water directly, because the liquid used is water with dissolved salts to reduce freezing.

Dry Powder Extinguishers: It is a baking soda with an inert agent such as chalk, dry sand or clay to prevent the baking soda to absorb moisture. The liquid carbon dioxide serves to throw the dry compound. Upon contact with fire, baking soda decomposes into gas, carbon dioxide, carbonate of soda and water vapor, these fire extinguishers fall under the category "B" and "C".

Other points of chemical solution (jet loaded) dissolved in water used a number of alkaline salts, and this fluid is released through carbon dioxide contained in a cartridge placed inside the device. As with the water, the main effect is to suppress and chill. This type of fire apparatus is good for category "A" and also for the category "B" when it comes to small amounts of liquid fire.

Carbon Dioxide Extinguishers: It is a gas which is pure carbon dioxide under high pressure of 70 kilos x cm. Square normal internal temperature, making it liquid gas cylinders or bottles and requires specially built required a light weight and equipped with a special valve. Fires are used in class "B" and "C".

Water Extinguishers (direct jet): The effectiveness of water as fire extinguishers fire is due almost entirely to a cooling effect. Avoid using a direct stream of water in the case of burning oil. For electrical fires water jets launched in direct is not recommended because the water is a conductor of electricity.

Classification of Types of Fires:

CLASS "A" fires are of solid materials, which on burning coals that are opening up cracks cracks into the heart of material such as wood, genders, paper, grains, seeds, etc..

CLASS "B" fires occur in flammable liquids and materials that burn only on the surface in contact with air, such as petroleum products, oils, alcohol, gas, etc..

CLASS "C" fires of this kind can be solid or liquid, but which occur in electrical appliances or equipment that is supposed to generate or conduct electricity.

CLASS "D" applies to trucks, cars, automobiles of any aircraft and boats. But in any case are three classes of fires traditional "A, B, C" or integrated combinations of them.

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