How is extinguishing foam made?

Using a foam mixer, a constant amount of foaming agent is added to water. The mix of water and foaming agent does not generate the foam. This requires air to be added to the mix. A foam maker is required for this. For example, a foam nozzle. If little air is added to the mix, this creates a "wet" foam. This is called heavy foam. The more air that is added, the "drier" the foam becomes, which is called light foam. In all cases, the volume of the foam produced is many times greater than the mix. 


Kenbri has a wide range of foam fittings. View them here.