The Portable 20 Gallon Uni-Body Foamer is a medium volume foam applicator featuring a 4-wheel, all stainless steel cart assembly with a 20 gallon chemical concentrate tank. It will project foaming chemicals on to any surface up close or at distances up to 12 feet. This venturi injection system uses standard city water pressure (35 - 125 PSI) to draw and blend chemical concentrate from the tank into the water stream to create an accurately diluted solution. Rich, clinging foam is created by injecting compressed air into the solution to greatly increase volume and coverage ability. The foam is then projected through the discharge hose and fan nozzle.