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Variable pump in position " Delivery flow zero". Often, the pressure hold position of the pump, i.e. the position in which the pump covers the leakage losses incurred, is – incorrectly – labelled the

Typical demand made of the drive during a working cycle . .

Since port layouts have become internationally standardised, these valves no longer meet hydraulic standards. (Figure F 40) Directional valve with a second tank connection. This design was very popula

Difference between the largest and smallest permissible deviations of the from the limit (DIN 19 226 Part 2).

Entirety of the static and dynamic properties of a final controlling device in physical/technical terms and in terms of transmission (DIN 19 237).

Describes the flow rate-pressure characteristic of a concentric flow resistance ( orifice , Bernoulli's principle). Does not apply for laminar flow resistance (e.g. capillary tube ).

Flow rate escaping from pressure compartments in spite of seals , particularly in systems with purely metallic seals, without contributing any useful work. Apart from the geometric variables associate

according to VDI 3260 Graphic description of the movement sequence of hydraulic systems from which the individual steps and their sequence for a switching cycle are defined, as can be seen in (Figure

Pressure p A or p B in the operating ports A or B with a load that is not subjected to load and hydraulic zero. The clamping pressure is then equal to half the sum pressure . This statement does not a

Variable pump which is adjusted by an electro-hydraulic closed circuit position control system according to the requirements of a parent control system such that it always moves an exactly defined flo