The Uni-Body W-20 Spray-All / A-25 Airless Foamer is a combination applicator for applying one chemical as foam and another as a low-volume spray. This venturi injection system uses standard city water pressure (35 - 125 PSI) to draw and blend chemical concentrates into the water streams to create accurately diluted solutions. Precision metering tips are used to control chemical usage. Foaming chemical solution flows through the foam hose to the "airless" foam wand which draws in atmospheric air to create and project wet, clinging foam at distances up to 6 feet. The other chemical solution flows through the spray hose and is projected in a fan pattern.