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Types of Extinguishers

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Whether you are a small business or a large corporation, there are many different types of extinguishers that can protect you and your property. These types of extinguishers can include Water, Foam, and Carbon dioxide (CO2) extinguishers.

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    Water extinguishers

    Generally, water extinguishers are used in commercial and industrial facilities. They are available in different sizes and prices. They are also available in various colours and codes. You need to know the safety factors before you purchase one.

    Water extinguishers are mostly used in Class A fires. These types of fires involve solid combustible materials, such as paper, rubber, straw, wood, and solid plastics.

    Water extinguishers work by absorbing the heat from the burning materials and lowering the general temperature. They are suitable for both indoor and outdoor use. They are also easy to operate. Unlike dry powder extinguishers, water extinguishers do not leave any residue. They also work well with carbon-based materials. However, they should not be used on flammable liquids or electrical equipment.

    Water mist extinguishers are also available. They use de-ionized water and discharge it as a fine spray. They are effective in class A, B, and F fires. They are also used in book collections and operating rooms. They are non-conductive and are safe for electronics and tapestries.

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    There are two types of water extinguishers – wet chemical and air pressurized. Wet chemical extinguishers are more expensive than other types. They contain special treatments to provide resistance to moisture absorption. They are also very powerful. They are effective on most fires.

    Carbon dioxide (CO2) extinguishers

    Generally, carbon dioxide (CO2) extinguishers are used to suppress Class B flammable liquid fires. These extinguishers are also effective against electrical fires. They are a clean, non-corrosive, and non-contaminating fire suppressant.

    Carbon dioxide extinguishers are a great alternative to traditional water-based extinguishers. This type of extinguisher has a higher pressure and is able to suppress smaller flammable liquid fires. They are effective in confined spaces where water-based extinguishers may not be effective.

    CO2 extinguishers are typically used in offices and server rooms. These fire extinguishers should be used with a side to side sweeping motion. They should be used until the flames are suppressed. Afterward, the CO2 extinguisher should be stored in a fire extinguisher cabinet. The CO2 extinguisher should be checked and maintained regularly.

    Carbon dioxide extinguishers can be used to extinguish fires involving flammable liquids, but are not effective against ordinary flammable combustible solids. After the extinguishment, the solid material may smoulder and reignite, and may also ignite if oxygen returns to the fire.

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    Unlike traditional water-based extinguishers, CO2 extinguishers are not effective against windy conditions. During windy conditions, the wind may drift and direct the CO2 gas away from the fire. The CO2 gas is also extremely cold when it comes out of the extinguisher. The CO2 gas may cause frostbite.

    Foam extinguishers

    Various foam extinguishers are available for different types of fires. Some are designed for Class A fires, while others are suitable for Class B fires. There are dry chemical extinguishers, as well as water and synthetic extinguishing agents. AFFF, or aqueous film-forming foam, is the most common type of foam extinguisher.

    AFFF is composed of fluorinated hydrocarbon surfactants. These surfactants are used to produce high foam. In addition to reducing the surface tension of water, they also help to penetrate into the burning material. These chemicals also help to cut off the oxygen supply and to cool the burning object.

    In addition to cutting off oxygen, foam extinguishers also cut off air. The thick foam covers the burning substance and smothers it. It also reduces the risk of the fire spreading. The burning substance is also slightly cooled by the water content in the foam. This cooling effect helps to bolster the suppressive effect.

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    These extinguishers are usually used in a commercial setting, such as a retail store or office building. They are also used in homes for fires involving cooking oils and liquids.

    Foam extinguishers can be purchased in a range of sizes. They are available in 30, 34, and two gallon sizes. They are also available with dielectric markings to protect against electrical risks.

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