The high expansion foam generator is a product able to produce large quantities of foam, thanks to its high expansion ratio (Lts foam mixture / Lts foam) up to 1:800. For this reason it is used for the saturation of large volumes of enclosed spaces.
Generators can be of various sizes and are calibrated to deliver different capacities. All models are made of a case and a stainless steel mesh, the latter having the function of suction of the foam, while only some of them have a fan in aluminum or synthetic material that generates the thrust of the foam. They are typically fixed to the wall or ceiling of large enclosed spaces.