Foam fire extinguishers

Foam extinguishers are most effective on Class B fires, although it can also be used on Class A fires. A fast flowing film forms a gas tight blanket on liquid surfaces, giving rapid fire control and burn back security. It is stable on fuels with proportions of polar additives like alcohol and other ones. It is also invaluable in preventing serious Class B fires by application to spilled flammable liquids before ignition.

Designs