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Vertical height h in m of a column of fluid that, provided the density of the fluid is known, serves as a measure of the pressure that this column applies over the area of its base. The pressure head

Local increase in the pressure along the route in a steady-state flow (DIN 24 312).

Velocity of the transmission of pressure in a fluid (speed of sound). It is dependent on the bulk modulus K of the medium and its density ρ: In air in the normal state it is 333 m/s. In mineral oil it

Hydraulic fluids have the task of transporting hydraulic energy from the location of generation (pump) to the location of conversion ( cylinder , motor) with the minimum possible losses. They are also

Filter that is built into the high-pressure line, i.e. after the pump. It is an advantage that only the pump delivery flow must pass through it and that the following components are protected (Figure

Filter element that withstands a differential pressure that is at least as large as the nominal pressure of the system, without damage occurring to its structure or the filter material.

Difference between two pressures p 1 and p 2 : If the pressure difference is the measured variable it is called the differential pressure p 1,2 (DIN 24 312).

DC solenoid

Feature that actuates the device on a pressure change in the control line. The actuation can be direct or indirect. Direct pressure actuation occurs if the hydraulic pressure acts directly on the actu

In hydraulics a differentiation is generally made between four pressure ranges within which the allocation of pressures is however a little scattered: Low pressure (LP): Pressures up to approx. 100 ba