The advantages of Foam Fire extinguisher are:
Applied to fuel fires as either an aspirated (mixed & expanded with air in a branch pipe) or non aspirated form to form a frothy blanket or seal over the fuel, preventing oxygen reaching it. Unlike powder, foam can be used to progressively extinguish fires without flashback.
- The 6 litre version is lighter to lift & carry (when compared to the 9 litre water)
- It is multi-risk for both classes A & B fires
- Prevents re-ignition of flammable liquids
- Effective against obstructed Class B fires
- Can be applied to liquids in tanks, shielding them from another source of ignition
Applied to fuel fires as either an aspirated (mixed & expanded with air in a branch pipe) or non aspirated form to form a frothy blanket or seal over the fuel, preventing oxygen reaching it. Unlike powder, foam can be used to progressively extinguish fires without flashback.
- AFFF (aqueous film forming foam), used on A and B fires and for vapour suppression. The most common type in portable foam extinguishers. It contains fluorotensides.
- AR-AFFF (Alcohol-resistant aqueous film forming foams), used on fuel fires containing alcohol. Forms a membrane between the fuel and the foam preventing the alcohol from breaking down the foam blanket.
- FFFP (film forming fluoroprotein) contains naturally occurring proteins from animal by-products and synthetic film-forming agents to create a foam blanket that is more heat resistant than the strictly synthetic AFFF foams. FFFP works well on alcohol-based liquids and is used widely in motor sports.
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