Diagtronics

A carbon dioxide (CO2) fire extinguisher is a liquid substance contained in a cylinder extinguisher. Once sprayed into the air, the liquid converts to a dry mist that covers the fire. This material counteracts oxygen necessary for the fire to continue. Categories There are 4 categories of fire extinguishers, based on the types of fires. The extinguishers are rated according to how much fire that category can handle. The categories are as follows. Class A ? Extinguishers, which can be used on ordinary combustibles such as paper, wood and plastics. This rating represents the amount of water the fire extinguisher holds and the amount of fire it can handle. Class B ? Extinguishers, which can be used on flammable or combustible liquids such as gas, kerosene or grease. This rating represents the amount of square footage the extinguisher can cover. Class C dietrine ? Extinguishers, which can handle electrical equipment such as appliances, wiring and circuit breakers. This rating indicates the extinguisher is non-conductive. Class D ? Extinguishers, which can handle combustible metals. How it Works CO2 fire extinguishers are used for class? B & C fires. This type of fire extinguisher contains a non-flammable gas, and is highly pressurized. The pressure is so intense, that bits of dry ice can shoot out the nozzle. CO2 fire extinguishers don’t work very well on class A fires because they may not be able to displace enough oxygen to put the fire out. Residential Use CO2 fire extinguishers can be used for commercial or residential use. CO2 extinguishers are the better option for fires in the kitchen or areas of the home with electronics. CO2 is harmless to electrical equipment and are valuable in the home office.