Shut-loop: Motor-return is linked straight to the pump-inlet. To help keep up tension on the low stress facet, the circuits Use a charge pump (a small gear pump) that provides cooled and filtered oil to your lower strain facet. Shut-loop circuits are frequently used for hydrostatic transmissions in cell apps. https://wissenfakt.de/die-10-besten-rohrbiegemaschinen-des-jahres-2024-ein-umfassender-leitfaden/