vaahtosammuttimen

Vaahtosammutin, commonly known as a foam extinguisher, is a type of fire extinguisher that uses a foam mixture to extinguish fires. This foam is typically created by mixing water with a foaming agent, such as an alcohol-resistant or aqueous film-forming foam (AFFF) concentrate. When discharged, the foam forms a blanket over the burning material, suppressing vapors and preventing re-ignition by excluding oxygen.

Foam extinguishers are particularly effective on Class A fires (ordinary combustibles like wood and paper) and Class B fires (flammable liquids like gasoline and oil). The cooling effect of the water in the foam also contributes to extinguishing the fire. However, they are generally not recommended for Class C fires (electrical fires) or Class D fires (combustible metals) due to potential conductivity or reactive properties.

The operation of a vaahtosammutin is similar to other pressurized extinguishers. It typically involves pulling a pin, squeezing a handle, and directing the nozzle at the base of the flames. The foam expands and spreads, creating a thick layer. Regular maintenance and inspection are crucial to ensure the extinguisher is ready for use. Foam extinguishers are a common sight in many industrial, commercial, and residential settings where Class A and B fires are a concern.