Shut-loop: Motor-return is related on to the pump-inlet. To maintain up strain on the small strain side, the circuits Have a very cost pump (a little gear pump) that provides cooled and filtered oil into the reduced pressure side. Shut-loop circuits are usually utilized for hydrostatic transmissions in cell programs. https://wissenfakt.de/die-10-besten-rohrbiegemaschinen-des-jahres-2024-ein-umfassender-leitfaden/