Dry Powder Fire Extinguishers are designed for use on paper and wood, electrical and flammable liquid fires in other words all types of fire.
The Dry Powder Fire Extinguishers charged with ABC or ABE powder. This powder is basically a mix of mono-ammonium phosphate, ammonium sulphate, mica clay and silicon. The powder is acidic and can cause shortness of breath when used in a confined area. The powder is slightly acidic and all traces of powder must be cleaned up after use.
Dry Powder Fire Extinguishers are constructed with a powder coated, steel cylinder and a brass valve.
The dry powder extinguishers are stored pressure fire extinguishers and all stored pressure fire extinguishers have a pressure gauge fitted to the valve group. Ensure that the gauge is pointing to the green section prior to use.
The dry powder is expelled from the extinguisher by gas which is dry nitrogen. The powder passes through the valve so that the discharge can be controlled by the squeeze handles and then down the discharge hose. The powder must be directed at the base of the fire and the swept across the fire from side to side in a fast sweeping motion.
Dry Powder Fire Extinguishers must be recharged after use, as the valve will leak because the powder will cover the seals and the extinguisher will loose pressure. If the locking pin seal is broken, it may well be that the extinguisher has been used. Always have the extinguisher checked if the seal is broken.
