All about Carbon dioxide Fire extinguishers
Carbon dioxide (CO2) fire extinguishers contain carbon dioxide gas at extremely high pressure and feature a discharge horn in the form of a flute (around 55 bar at ambient temperature). These fire extinguishers are quite noticeable. The red body of an extinguisher with a black square on it is intended to put out fires started by carbon dioxide. By eliminating oxygen from the burning atmosphere and substituting it with inert CO2 gas, CO2 fire extinguishers put out fires. A fire is impossible to have without oxygen. It is not a good idea to use an extinguisher to put out Class A flames, which involve solid combustibles like paper, wood, and fabrics, despite the fact that the CO2 it emits is very cold. On fires rated as Class A, extinguishers made of water that may penetrate and saturate the burning material must be used to prevent the fire from re-igniting. A Class A fire that is still burning after the CO2 gas has been discharged into the environment could spontaneously restart. CO2 Gas...