HD 9 / 20-4 M: powerful, mobile high-pressure cleaning machine with four-pole, low-speed, three-phase motor and advanced equipment, pressure switch control, rotating spray barrel and high-pressure rotary hose. The control of the water flow and the working pressure is easily done through the servo control mechanism directly from the spray gun. The aluminum push handle guarantees maneuverability and can also be used to store parts. Thanks to a quick-change system, the SwitchChem cleaner dosing system allows for a long and flexible service life, as well as the use of two different cleaners. The EASY! Force high pressure gun and the EASY! Lock quick release clips ensure relaxed work and time savings during assembly and disassembly. The EASY! Force high pressure pistol utilizes the reset force of the high pressure jet to zero the retaining force, while the EASY! Lock quick release connectors allow up to 5 times faster handling than conventional screw joints, without compromising on durability and robustness. The durable three-piston axial pump with a brass cylinder head guarantees a long life.