Foam Extinguishers

These type of fire extinguishers are ideal where both A & B class fire risks exist. AFFF (Aqueous Film Forming Foam) is particularly suited to class B fires caused by the combustion of materials that liquify such as petrol, oils, fats, paints and tar.

How Do Foam Extinguishers Work? 

These extinguishers are also known AFFF extinguishers because they contain Aqueous Film Forming Foam in addition to water. The cooling power of water is combined with AFFF which smothers and seals flammable vapours. This means that this type of fire extinguisher is capable of tackling both Class A & B fires. The AFFF helps prevent the fire from re-igniting after it has been initially put out. Another benefit is that the contents of these specific extinguishers are not toxic.

An extinguisher such as this should be chosen for properties where there is a variety of fire risks such as warehouses, factories, garages, and similar buildings.

The use of this type of extinguisher depends on the type of fire you are dealing with:

  • Flammable liquids: Do not spray the fire directly as this could cause the burning liquid to splash and spread the fire. The hose should be aimed at a vertical surface near the fire so that foam falls onto the fire. These extinguishers build up foam on the burning liquid, cutting off the oxygen supply to the fire.
  • Flammable solids: Aim the hose at the base of the fire and spray across the burning area.

Reasons why you should choose Fire Protection Services as your preferred fire protection company.

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