Usually, a fire extinguisher will contain a mix of chemicals or gases like carbon dioxide or nitrogen in a compressed form. Fire extinguishers are designed in such a way that they can be easily held, hence they have a handle with a trigger attached to the cylindrical body.
Fire Extinguisher Sizes. The size of a fire extinguisher indicates the amount of extinguishing agent it holds and is most often measured in pounds. Sizes can range from as small as 2.5 lb. to as large as 350 lb. While the largest extinguishers will come with built-in wheels to make transportation manageable, size is always important to consider.
Fire Extinguisher Types | NFPA
Fire extinguishers of this type contain an ammonium phosphate base agent. Multipurpose agents are used in exactly the same manner as ordinary dry chemical agents on Class B fires. For use on Class A fires, the multipurpose agent has the additional characteristic of softening and sticking when in contact with hot surfaces.
Usually, a fire extinguisher will contain a mix of chemicals or gases like carbon dioxide or nitrogen in a compressed form. Fire extinguishers are designed in such a way that they can be easily held, hence they have a handle with a trigger attached to the cylindrical body.
People Also Ask a typical fire extinguisher will contain around
What comes out of a fire extinguisher?
The extinguishing agent comes out of the extinguisher to eliminate fires. It is fed out of the extinguisher’s tank via a pickup tube once an expellant (often from a compressed gas canister) is released into the tank. The expellant is released when the safety pin is removed and the discharge lever is squeezed.
Why choose a different fire extinguisher for each application?
Fire extinguishers are uniquely designed to meet the needs of a variety of applications, so it’s important to choose the one that’s right for you. For example, a different extinguisher may be needed for a commercial kitchen as opposed to a clean room or library.
What do the numbers on a fire extinguisher mean?
One A is equivalent to 1.25 gallons of water, so a unit with a 4A rating has an equivalent of 5 gallons of water to battle Class A fires. B: The number in front of the "B" is a relative measure of the area an extinguisher can cover. C & K: These letters indicate that an extinguisher can be used effectively against these fire classes.
What does 4A mean on a fire extinguisher?
One A is equivalent to 1.25 gallons of water, so a unit with a 4A rating has an equivalent of 5 gallons of water to battle Class A fires. B: The number in front of the "B" is a relative measure of the area an extinguisher can cover.
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The Knowledge Exchange – Know Your Fire Extinguisher Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher