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Installation of one or more valves in one plate, which is placed between two valves or between a valve and base plate (block) (Figure Z 19). Pressure valves , check valves and flow valves are suitable

Servo valves

Valve with two switching positions. In the case of the directional valves these are 2/2, 3/2 and 4/2 directional valves.

Control loop, which in addition to the control variable , a further auxiliary variable (e.g. velocity or acceleration) in a subordinate minor loop is fed back.

Drive which works in two quadrants. Operating modes of a drive.

The power input P of a pump is calculated from the pressure p and the flow Q as well as from the efficiency factor η of the pump. Alternatively, the power input can also be calculated from the torque

The power output P of a hydraulic motor is calculated from the pressure p and the flow Q sowie as well as from the efficiency factor η of the motor. Calculate the power output of a hydraulic motor dir

The heat output to be dissipated Pc of a flow rate Q is calculated from the temperature difference at inlet and outlet, the specific heat capacity of the medium c (~1.88 kJ/(kg*K) for Oil, ~4.18 kJ/(k

In a closed hydrostatic system (closed box without moving in the fluid) pressure p is constant at each point. The pressure F is calculated as the force F per unit area A and the number of cylinders ic

The oil volume Vp of the piston side of hydraulic cylinders is calculated from the diameter of the piston dp, der Hublänge s und der Anzahl der cylinder ic. Calculate the piston side volume directly a