The W-50SS Spray-All is a water-driven, high volume spray applicator for applying chemical solutions to a variety of surfaces. This stainless steel venturi injection system uses boosted water pressure (125 - 350 PSI) to draw and blend chemical concentrate into the water stream using precision metering tips. The accurately diluted solution is then projected through the discharge hose and adjustable spray pattern trigger gun as a powerful, "flooding spray" for applying sanitizers or other chemicals.