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Graphical representation of the transfer of a signal between two or more functional elements or operating materials (DIN 40 719 T 61).

In the case of three-directional valves, in the centre position, all ports can be connected to one another –– and therefore with the workflow (requires negative overlap).

Response pressure to close a device under defined conditions (DIN 24 312).

Previous term used for symbols .

Suction pressure

Distinction of types of friction according to the movement type. Sliding friction is the movement resistance between bodies whose speed is different in the contact area in terms of amount and/or direc

In general : Sum of pressure in the operating ports of a (continuously adjustable directional valve, hydraulic motor). For valves : Sum of pressure p A and p B in the operating ports A and B with a co

Automatic controller settings with self-teaching systems or identification processes or similar methods. The self-tuning of controllers is intended to accelerate difficult and arduous initial settings

Power losses , hydromechanical efficiency

Hydraulic bridge rectifier