The Mod. GSAER is a dynamic high expansion foam generator manufactured in stainless steel with an air blades turbine. The turbine is put into motion by the same water/foam solution and is capable to entrain air into the water/foam spray projected on the generator net resulting into the emulsification of the foam. The GSAER branch pipe is available with threaded connection BSP, flanged connection ANSI or UNI or any type of instantaneous coupling. The BSP version can be delivered with instantaneous coupling (UNI, BS, etc) to form a mobile unit equipped with a support and handles.