The HD 9/20-4 M is a powerful and mobile high-pressure cleaner featuring a 4-pole, low-speed three-phase motor, pressure switch control, and a rotatable spray lance with a pivoting pressure hose. Conveniently control water flow and working pressure directly via Servo Control on the spray gun. Its aluminium push handle ensures easy manoeuvrability and doubles as accessory storage. The SwitchChem cleaning agent dosing system allows for long, flexible operating times and the use of two different cleaning agents with its quick-change system. Equipped with the EASY!Force high-pressure gun and EASY!Lock quick-release fasteners, this cleaner ensures effortless operation and time-saving setup and dismantling. The robust three-piston axial pump with brass cylinder head guarantees a long service life, making it a reliable choice for demanding cleaning tasks.