The Drum Bung Mount Uni-Body™ A-25 Airless Foamer is a drum-mounted, medium volume foam applicator for projecting foaming chemicals on to any surface up close or at distances up to 6 feet without compressed air. This compact venturi injection system uses standard city water pressure (35 - 125 PSI) to draw and blend chemical concentrate directly from the drum into the water stream to create an accurately diluted solution. The solution then flows through the discharge hose to the "airless" foam wand which draws in atmospheric air to create and project wet, clinging foam.