The WR-1 Foam / Rinse System is a combination medium volume airless foam applicator with a rinse mode. 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 solution then flows 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 rinse at full pressure.