The WR-4 2-Way Foam/Rinse/2-Way Sanitize System is a combination applicator featuring chemical pickups for two foaming chemicals and two sanitizers which can be applied separately or simultaneously. This venturi injection system uses standard city water pressure (35 - 125 PSI) to draw and blend chemical concentrate into the water stream to create an accurately diluted solution. The foaming solutions then flow through the discharge hose to the airless foam wand which draws in atmospheric air to create and project wet, clinging foam on to any surface up close or at distances up to 6 feet. Quick connect the pistol grip gun to apply sanitizers or to rinse at full pressure.