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.
Water Fire Extinguisher. Use: Water fire extinguishers are best for combatting Class A fires, for example fires involving organic solid materials, such as …
Fire extinguisher – Wikipedia
This is a powder-based agent that extinguishes by separating the three parts of the fire triangle. It prevents the chemical reactions involving heat, fuel, and oxygen, thus extinguishing the fire. During combustion, the fuel breaks down into free radicals, which are highly reactive fragments of molecules that react with oxygen. The substances in dry chemical extinguishers can stop this process.
People Also Ask what is in solid fire extinguishers
What is a fire extinguisher made of?
Fire extinguisher. Cartridge-operated extinguishers contain the expellant gas in a separate cartridge that is punctured prior to discharge, exposing the propellant to the extinguishing agent. This type is not as common, used primarily in areas such as industrial facilities, where they receive higher-than-average use.
What are the fire extinguishing agents used in fire extinguishers?
The fire extinguishing agent used in these devices is a powder composed of very small particulates. Types of agents available include sodium bicarbonate base and potassium bicarbonate base.
How much dry chemical is in a fire extinguisher?
A typical dry chemical extinguisher containing 5 lb (2.3 kg). of monoammonium phosphate dry chemical. A 10 lb (4.5 kg) stored pressure purple-K fire extinguisher An 18 lb (8.2 kg) US Navy cartridge-operated purple-K dry chemical ( potassium bicarbonate ) extinguisher.
What is a Class A fire extinguisher?
Class A fire extinguishers are safe for use on ordinary combustible fires, like those fueled by paper or wood. There are a number of safe ways to extinguish a Class A fire, so you’ll find a variety of Class A fire extinguisher options available.
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CLASSES OF FIRE AND EXTINGUISHER Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher