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Hydraulic speed regulators – 25 Series
The speed regulator is basically a closed hydraulic circuit without its own power source. It consists of a cylinder filled without oil, a piston rod with piston, a control valve and compensation tank.
When the regulator rod receives the thrust of a moving mass, the piston moves and closes the one way valve. This forces the oil towards the pin control valve where it encounters a restriction that can be adjusted externally. The oil flows through the control valve into the other chamber which is separated by the piston.
During the return movement controlled by a spring, the one-way valve opens and the oil flows freely to enable a rapid return movement.
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