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Since 1981, the Eurofeu Group has been manufacturing a complete range of "Origine France Garantie" permanent and auxiliary pressure extinguishers to cover all the risks encountered, whatever your customer's activity. Stand out from the crowd! Discover our ranges and services.
What is a CO2 extinguisher?
In CO2 extinguishers, carbon dioxide is both the propellant and the extinguishing agent. CO2 is present in the cylinder in compressed, liquefied and gaseous form. The extinguishing mode uses two states of the product:
- cooling due to the expansion of the gas (which creates "dry ice"). The temperature of the carbon dioxide at the diffuser outlet is -78°C in the dry ice state.
- reducing the oxygen content of the immediate environment, thus suffocating it.
How to hold and use a CO2 extinguisher?
A CO2 extinguisher consists of the following components:
Mounted head, hose and propellant
A cylindrical body
A mounted head that closes the unit
- The handle for holding the device and operating the extinguisher,
- A dip tube,
- Control and safety devices (seals, pins, pressure gauges, etc.),
A rubber diffuser
- As well as a lance for 5 kg models
A cylindrical body
- Metal loaded with carbon dioxide
The device operates mechanically: by releasing the handle and removing the pin, carbon dioxide can be sprayed via the dip tube and diffuser onto the fire to be extinguished.
The temperature of carbon dioxide leaving the diffuser is -52°C as a gas and -78°C as dry ice. The expansion of the gas therefore creates an intense cold. To avoid frostbite, hold the extinguisher by the handle, not by the body.
The fire attack distance varies between 1.5 and 0.5 meters for a carbon dioxide extinguisher.
How to recognize a CO2 extinguisher?
CO2 extinguishers can be identified in Europe by their grey or black elements:
When it comes to fighting fires, the first few seconds are the most important. The longer you wait to attack a fire, the more fire-fighting resources you need.
When should you use a CO2 extinguisher?
What type of fire can a carbon dioxide (CO2) extinguisher put out?
To find out more about fire types and how to extinguish a fire, consult our fire class summary table.
These devices are recommended for Class B fires (hydrocarbons, solvents, gasoline, alcohols, greases, oils, paints, etc.), but especially for electrical fires (former Class E), as they do not damage equipment or leave residues. Powder and water extinguishers with additives are also alternatives for these fires, but cause considerable damage and risk to the user.
Where to place a CO2 extinguisher?
Powder extinguishers are preferable in the following environments:
electrical equipment, computers, electronics, server rooms, electrical panels
For extreme environments, Eurofeu has developed an adapted range of equipment, including non-magnetic CO2 extinguishers to protect environments with magnetic fields (medical scanner rooms, for example).
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