Foam spray extinguishers, (AFFF - Aqueous Film Forming Foam), are ideal for multi-risk situations where both Class A combustible materials and Class B flammable liquid risks are likely to be found, or where Class B risks present a direct hazard. Foam spray extinguishers are especially suitable for Class B fires involving flammable liquids such as oils, spirits, greases, fats and certain plastics.

The blanketing effect of foam spray gives rapid flame knock down which smothers the flame and thus prevents re-ignition of flammable vapours by sealing the surface of the solution. Foam spray extinguishers are manufactured in four stored pressure models: 9, 6, 2 and 1 litre, and two gas cartridge models: 9 and 6 litre.