Model 425 features 4-gal., high-density polyethylene tank. Adjustable nozzles deliver flat spray, hollow cone, and jet stream. Built-in strainers, screens, and filters keep nozzles free of debris. Includes piston pump. Regulating valve adjusts pressure to 15, 30, 40, or 60 p.s.i. Boasts unbreakable wand, fold-away handle, and chemical resistant Viton seals, gaskets, and O-rings.