An external pluger pump produces a constant water pressure of >4,000 bar. The water pressure is supplied to a nozzle via a flexible high-pressure hose that is clamped to the spindle of the machine. A magnet valve, positioned in front of the nozzle, activates/deactivates the pressure via a command from the control unit.
For safety reasons the flexible high-pressure hose has a second casing. If there is a leak in the high-pressure hose, water enters the cavity between these two hoses. If minute traces of water are detected in this cavity, the water jet is immediately and automatically cut off.
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