This system is used in order to extinguish the flammable and liquid chemical materials or fuels. Depending on the chemical properties the froth can be protein based, synthetic based, film former and alcohol resistant. They are designed as automatic and manual. The froths are used in froth fire cabinet, tank extinguish system, froth monitoring system, froth generator.
Foam is chemical compound. When it is mixed with a pressure vessel, this compound passes through the froth maker and mixes with the air so froth is created. Froth covers the fire's surface like a blanket, it cuts off contact with air, in addition to that it cools very well so it is a good extinguisher.
They are widely used in tank fields, petro chemical plants, marines, fuel transfer stations, aircraft hangers.