The Portable WR-1 Foam/Rinse System is a combination medium volume airless foam/rinse applicator featuring the unique all-in-one SmartWand and an all stainless steel cart assembly. This venturi injection system uses 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 and the SmartWand 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. Open the rinse valve and rotate the SmartWand to the rinse position to rinse at full pressure.