How Does Foam Extinguisher Put Out Fire?

How Does Foam Extinguisher Put Out Fire? Unlike other extinguishing agents – water, dry chemical, CO2, etc., a stable aqueous foam can extinguish a flammable or combustible liquid fire by the combined mechanisms of cooling, separating the flame/ignition source from the product surface, suppressing vapors and smothering. How does a foam fire extinguisher work? Foam