All About Foam Fire Extinguishers

All About Foam Fire Extinguishers NZ

Foam Fire Extinguishers

Foam fire extinguishers are an excellent solution if you run the risk of Class B fires involving flammable liquids, such as petrol and paint.

Aqueous film forming foam (AFFF) is a synthetic foam concentrate consisting of fluorinated surfactants plus foam stabilisers which are mixed with water to form a foam.

The fluorine-free extinguisher is a next generation short chain based extinguisher with superior performance.

How to Identify A Foam Fire Extinguisher?foam fire extinguisher sign

Foam Fire Extinguishers are a red cylinder with a blue band running all around the top. They also have a different nozzle compared to other extinguishers that are used to help mix the foam.

Where To Use A Foam Fire Extinguisher

AFFF fire extinguishers are suitable for use on common flammable liquid fires such as:

  • Petrol
  • Oil
  • Paint

Foam fire extinguishers shouldn’t be placed in locations near electrical equipment. In the heat of the moment, someone may use the extinguisher without thinking about it and spray on live electrical equipment.

How Does A Foam Fire Extinguisher Work?

The Foam fire extinguisher works by providing a film on top of the fuel, starving the fire of oxygen.
For class A fires not only does it remove the oxygen but also lowers the temperature thanks to the cooling effect from the water.

Foam Extinguisher Sizes

9 litre afff fire extinguisher nz

We stock two types of foam fire extinguisher

9.0ltr – Foam AFFF fire extinguisher.
9.0ltr – Fluorine-free foam fire extinguisher.

Advantages Of Foam Extinguishers

Foam provides an extended lasting layer to control the fire after the extinguisher discharge is complete.

It can also be used to form a vapour suppression barrier over flammable liquid spills.

Our new fluorine-free foam breaks down around 97% after 14 days. Thus making it an even more environmentally friendly option.

Disadvantages Of Foam Extinguishers

A foam fire extinguisher is mostly water. therefore should not be used on Class E fires.

The aqueous solution is corrosive and requires to be cleaned after used, particularly on painted surfaces.

It is advised to not use foam extinguishers for class F fires.

How To Use A Foam Fire Extinguisher

Like all other fire extinguishers, you need to remember the PASS-word.

Pull the Pin
Aim at the base of the fire.
Squeeze the handle.
Sweep from side to side.

Fire extinguisher PASS method

See our guide on How to Use a Fire Extinguisher.

How To Use A Foam Fire Extinguisher Video