Question

explain working of a fire extinhusher ​

Answer 1

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This is the basic principle on which fire extinguishers are built that help to extinguish a fire. Different types of fire extinguishers remove different components that require the fire to sustain, thereby extinguishing it. Water extinguishers: Water is one of the most commonly used fire extinguishing agent.

Answer 2

Fire extinguishers are filled with water or a smothering material, such as CO2. By pulling out the safety pin and depressing the lever at the top of the cylinder (the body of the extinguisher), this material is released by high amounts of pressure.

At the top of the cylinder, there is a smaller cylinder filled with compressed gas. A release valve acts as a locking mechanism and prevents this gas from escaping. When you pull the safety pin and squeeze the lever, the lever pushes on an actuating rod which presses the valve down to open a passage to the nozzle. The compressed gas is released, applying a downward pressure on the fire-extinguishing material. This pushes the material out the nozzle with high amounts of pressure.