The trends in the development of the positive displacement pumps are oriented towards achieving higher pressures and rotating speed of products. Less material consumption and simplified production technology solutions are motivations from the design and manufacturing aspect. Hydrostatic pumps are classified into two larger groups - to pumps with a translatory motion of liquid displacement element, and to pumps with a rotating element (shaft). COR Pump System Design concepts Applications Advantages over other types of pump Economically interested production price (all pumping parts are produced with injection molding of dimensionally stable polymer material with high mechanical & thermal performance) Robustness against particle contamination corrosion resistance Good hydraulic characteristics Small dimensions High working pressure Bi-directional (backward) rotation.