Foam in concentrate cartridge
In foam cartridge fire extinguishers, the foam concentrate is separated from the water and stored in a cartridge. The foam concentrate and water are only mixed in the case of use by opening the propellant gas bottle. The separate storage of the foam concentrate guarantees years of durability and a constant extinguishing effect that cannot be achieved with comparable pre-mixed foam concentrates.
Thanks to optimized extinguishing agent additives, our foam cartridge fire extinguishers achieve ratings (extinguishing agent units) that can otherwise only be achieved with powder fire extinguishers, and that in fire classes A and B. New formulations of the extinguishing agent concentrates only require the smallest amounts of foam concentrate. Because it is kept in the cartridge, the foam concentrate not only lasts for years, but these small amounts of extinguishing agent can also be disposed of easily and in an environmentally friendly manner after the end of its useful life.
The fire extinguishing agent foam is created from a water / foam agent mixture by adding air. In the case of fires involving solid substances (fire class A), the high network effect combined with the interruption of the gas exchange and the cooling effect result in the excellent extinguishing properties. Foam extinguishing agents work by covering the entire surface of flammable liquids with a vapor-tight foam blanket, which prevents the entry of oxygen (sticking effect) and cools the surface (cooling effect).