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The pressure loss Δp in a laminar (Re < 2300) flow, straight pipe is calculated from the length lp and the diameter dp of the line as well as from the density ρ and the speed of the fluid vf. Calculat

Hydraulic pump — mostly with a single piston — for manual operation. It is single-acting in most cases, i.e. priming occurs during the first section of the cycle and delivery during the second. With d

Hydraulic speed control during which the hydraulic fluid flowing out of the actuator is throttled, e.g. by a flow valve in the return pipe.

As an independent valve : Pressure control valves are used to control or limit the system pressure in a plant or to switch in response to a signal pressure. Depending on the design a differentiation i

Orifices have different tendencies to accumulate contaminations in the pressure fluid . This changes the flow characteristics, and the orifice may become completely clogged under certain circumstances

Radial piston pump

Piston pumps, in which the flow rate is pressure-controlled by suction and pressure valves . Here the suction valve opens when facing a weak spring force as soon as the returning piston creates negati

A safety valve is a fitting, which, by automatically opening, prevents the system from surpassing a predefined overpressure and is intended to automatically close again after a drop in pressure. The r

Measure of speed control, in which the variable pumps are used, which only deliver as much hydraulic fluid as required in the circuit. This keeps the power loss smaller than the control with throttle

Adjustment equipment for hydraulic pumps which, for a drive with constant rotation speed (e.g. electric motor), restricts the power P as a product of the flow rate Q and pressure p to a maximum value,