Water Extinguishers or APW extinguishers (air-pressirized water) are suitable for class A fires only. Never use a water extinguisher on grease fires, electrical fires or class D fires-the flames will spead and make the fire bigger! Water extinguishers are filled with water and pressurized with nitrogen. Again-water extinguishers can be very dangerous in the wrong type of situation. Only fight the fire if you're certain it containes ordinary combustible materials only.
Dry Chemical Extinguishers come in a variety of types and are suitable for a combination of class A, B and C fires. These are filled with foam or powder and pressurized with nitrogen.
- BC - This is the regular type of dry chemical extinguisher. It is filled wiht sodium bicarbonate or potassium bicarbonate. The BC variety leaves a mildly corrosive residue whiche must be cleaned immediately to prevent any damage to materials.
- ABC - This is the multipurpose dry chemical extinguisher. The ABC type is filled with monoammonium phosphate, a yellow powder that leaves a sticky residue that may be damaging to electrical applances such as computers. Dry chemical extinguishers have an advantage over CO2 extinguishers since they leave a non-flammable substance on the extinguished material, reducing the likelihood of re-ignition.
Carbon Dioxide (CO2) Extinguishers are used for class B and C fires. CO2 extinguishers containg carbon dioxide, a non-flammable gas, and are highly pressurized. The pressure is so great that it is not uncommon for bits of dry ice to shoot out the nozzle. They don't work very well on class A fires because they may not be able to displace enough oxygen to put the fire out, causing it to re-ignite.
CO2 extinguishers have an advantage over dry chemical extinguishers since they don't leave a harmful residue-a good choice for an electrical fire on a computer or other favorite electronic devices such as a stereo or TV.
It is vital to know what type of extinguisher you are using. Using the wrong type of extinguisher for the wrong type of fire can be life-threatening.These are only the common types of fire extinguishers. There are many others to choose from. Base your selection on the classification and the extinguisher's compatability with the items you wish to protect.
Mon: 08:00 AM - 04:30 PM
Tue: 08:00 AM - 04:30 PM
Wed: 08:00 AM - 04:30 PM
Thu: 08:00 AM - 04:30 PM
Fri: 08:00 AM - 04:30 PM
4430 Brass Way
Dallas, TX 75236