Hydraulic circuit for directional control of fluid - of simple reliable construction allowing constant regulation

摘要

Hydraulic circuit for directional control with constant regulation of a vol. of fluid comprises four separate resistance means, of which the first one may be used as a hydraulically controlled two-way valve or as a measuring th throttle means with stroke-limiting means, and a second one may be used as a hydraulically controlled two-way valve or as a pressure regulator. The circuit may be arranged with the valves forming individual components in a control block, with control plates placed on top of the valves, and with elements placed on top of the block of control plates. The circuit may be used to control an injection moulding machine.