What is fire extinguisher?

What Does fire extinguisher Mean

A fire extinguisher is an element used to fight fire . Also called a fire extinguisher , this device is used to put out flames.

Fire extinguishers have a tube or a steel cylinder that stores a fire extinguishing substance inside , which is kept under pressure . When the valve is opened , the substance is expelled through a hose or nozzle .
Therefore, it is necessary to direct the hose or nozzle of the extinguisher towards the fire to put it out.
In addition to all the above, we cannot ignore that the fire extinguisher was created by the English publicist and inventor William George Manby (1775 - 1854). It occurred to him to shape this device when he attended a fire and saw that firefighters were unable to put out the fire on the highest floors of a building in Edinburgh.

This invention was patented in 1839 and, at first, it consisted of four cylinders: one that contained compressed air and the other three that carried water inside. However, in the following century, specifically in 1905, that of water began to be replaced by sodium bicarbonate.
So that it can fulfill its role, the extinguisher is a portable object , a person adult can carry itself without great difficulty.
There are, however, multiple types of fire extinguishers. The smallest ones contain one kilogram of extinguishing agent and are commonly carried in cars . Thus, in the event of any damage or accident that generates flames, the driver has a fire extinguisher at his disposal.
There are larger fire extinguishers that are installed in common spaces of buildings. In these cases, the idea is that any individual can use the fire extinguisher if necessary. In addition, there are heavier fire extinguishers that must be transported in small carts with wheels.
Beyond the different sizes, fire extinguishers also differ in their extinguishing agent. They can expel water , dry ice , a chemical powder or foam , for example.
By extinguishing agent, fire extinguishers act by suffocation , cooling , as inhibitors or through the removal of the fuel . According to where they will be installed, it is convenient to choose one or another model.
One or the other fire extinguisher will be used depending on the type of fire that has been produced. And it is that this can be of four different classes:

-Class A, which has fuels such as wood, cardboard or plastic.

-The class B, which is caused by paint, gasoline or oil.

-Class C, which is produced by butane, city gas or propane.

-The class D, which is caused by a metal such as, for example, aluminum powder.

Taking into account these types of fires, it is common to speak of halon fire extinguishers, universal powder extinguishers, hydric fire extinguishers, dry chemical fire extinguishers, specific fire extinguishers for metals, instant fire extinguishers ...

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