Ideal for applying degreasers, waterproofing solutions, carpet-care products, disinfectants and more, the 450 Series is engineered with the professional in mind. Rugged, high-efficiency piston-pump requires up to 50% fewer strokes than comparable alternatives to reach maximum pressurization. Superior to metal regarding both break and corrosion resistance, the ultra-violet-light-resistant HDPE tank features an extra-large capacity and a translucent color, allowing you to cover more ground while making it easy to monitor remaining product levels. Viton seals, throughout, ensure superior chemical-resistance, and a pressure-relief valve automatically vents pressure once the maximum compression level is reached to avoid dangerous over-inflation issues. A lock-on/lock-off lever located on the commercial-quality valve helps operators minimize the potential for "trigger-finger fatigue." A large-diameter top opening enables easy filling and cleaning. Webbed nylon carry strap is adjustable to fit nearly anyone. Several removable nozzle types (including premium TeeJet nozzles) can be attached to the unbreakable wand so that you can tailor its performance to your chosen task.