The Portable 5 Gallon Uni-Body™ A-50 Airless Foamer is a medium volume foam applicator that features an all stainless steel cart assembly that holds a 5-gallon chemical pail. This venturi injection system uses standard city water pressure (35 - 125 PSI) to draw chemical concentrate directly into the water stream to create accurately diluted solution. The solution flows through the discharge hose and airless foam wand, which draws in atmospheric air to create and project wet, clinging foam at distances up to 8 feet without compressed air.