All plastic parts and washers resistant to most acids and solvents, as well as to most chemical agents widely used in the world of industry, automotive and professional cleaning . 3 bar safety valve with depressurization option . Large opening for easy filling and cleaning . Ergonomic design . Strong translucent tank with level indicator . Protective sleeve for valve chamber . Easy assembly and taking apart for cleaning and maintenance, tool free . Special “foam” even fan type nozzle.