Foam generators deliver large quantities of foam by expanding foam solution in the range of 200:1 to 1000:1. The high-expansion generator operates by coating its screen with high-expansion foam
solution while air is blown through the screen to produce expanded foam. Because of its high expansion ratio, little water is required to generate large quantities of foam thereby reducing the
potential for hazardous run-off or water damage. Foam generators are water-powered and require no other sources of power.