![]() ![]() If this is adjusted, the spray jet also changes. The prevailing delivery pressure in the hydraulic oil circuit is limited by the pressure control valve, as is the material pressure. The piston drives hydraulic oil under the diaphragm again, it arches upwards and the material is pressed out of the chamber into the hose through the ball valve. Now the plate inlet valve opens and the vacuum draws in a further quantity of the pumped medium. When it is pulled down, a vacuum is created as the ball valve closes. When the diaphragm is pressed upwards, the plate inlet valve closes completely automatically and the material is forced out of the ball outlet valve into the hose. During the lifting motion, a piston drives hydraulic oil under the diaphragm, which in turn moves it. The hydraulic pump is driven by an electric motor via a planetary gear.
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