The W-20SS Sanitize / Rinse / A-20SS Airless Foam Hose Drop Station is a combination system for applying one chemical as foam, another as a sanitizing spray and for rinsing all without compressed air. This venturi injection system uses high water pressure (400 - 1000 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 and trigger gun to the "airless" foam wand which draws in atmospheric air to create and project wet, clinging foam at distances up to 10 feet. Apply sanitizer solution, or any other chemical, and rinse using the second hose, trigger gun and fan nozzle.