To operate the extinguisher, you pull the ring and press the handle. Pressing the handle opens a valve (shown here as a green arrow) that releases the pressurized gas from the canister. The gas immediately expands and fills the inside of the extinguisher, pushing the water downward As the water is pushed down, it rises up the tube
Foam fire extinguishers usually use compressed nitrogen or C02 gas and spray a dry powder or foam mixture. The foam is sent out of the container while swirling and mixing and this produces a large volume of spray. The foam is a mixture of water and chemicals, and the water provides a cooling effect on the fire.
How Fire Extinguishers Work | HowStuffWorks
Fire extinguishers are sturdy metal cylinders filled with water or a smothering material. When you depress a lever at the top of the cylinder, the material is expelled by high pressure, similar to the way material is forced out of an aerosol can.
Flames need fuel, oxygen and heat in order to burn. Fire extinguishers are designed to remove one of these elements by applying an agent that either cools the burning fuel, or removes or displaces the surrounding oxygen. You can read more details on fire extinguishing agents here.
People Also Ask how fire extinguisher works
How do you operate the fire extinguisher?
“That’s a scary situation, and that’s not the time to learn how to use an extinguisher, so be familiar with how to pull out the pin, how to unhook a nozzle if there’s a hose with the nozzle attached.” Swenson says you should have a lid close by when cooking on the stove.
How to use fire extinguisher correctly?
Using a fire extinguisherPull: Pull the pin, this will break the tamper seal.Aim: Aim low, pointing the nozzle or hose at the base of the fire. …Squeeze: Squeeze the handle to release the extinguishing agent.Sweep: Sweep from side to side at the base of the fire, the fuel source, until the fire is out.
How do fire extinguishers help stop a fire?
Pull – Pull the safety pin and break the tamper seal.Aim – Aim the nozzle of the extinguisher towards the fire and aim low.Squeeze – Gently start squeezing the handle on top to release the extinguishing agent.Sweep – Move the hose in a sweeping fashion and keep aiming at the base of the fire until it is put off. …
How to use a fire extinguisher in the workplace?
Pull the pin on the fire extinguisher.Aim the nozzle at the base of the fire.Squeeze the trigger in a controlled manner.Sweep the nozzle of the fire extinguisher from side to side to cover the entire area.
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