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A variation on the principle of functional block design whereby certain functional tasks are grouped together in blocks which may also be arranged at different positions at the machine (e.g. rapid tra

Pressure valve , which maintains a pressure before its inlet that is normally adjustable using a spring (e.g. to maintain a dynamic pressure).

Pressure in an auxiliary circuit fed by the main circuit of a system, in which the pressure is lower than the primary pressure . This is generally achieved using a pressure-reducing valve .

Fire-resistant hydraulic fluid based on esters of phosphates. It belongs to the group known as HFD fluids ; its fire resistance is can be explained by its molecular structure.

Some elastic materials, particularly thermoplastics , become deformed in their cold (normal) state when under a load. This means elastic deformation and therefore elastic tension start to decline.

Total area of the filter element that is subjected to the flow rate. To make this area as large as possible with given filter dimensions, the majority of are folded.

Piston with piston rod on both sides, mostly of the same size. The term synchronizing cylinder is used.

Collective term for all measures, rules and laws required to construct a control . This applies both to controls in signalling and to controls in terms of power.

Collection of programs for constantly repeated operations (e.g. individual mathematical operations). The program library also contains all user-specific programs or those made available by the manufac

Over the years, several different processes have been developed for the spatial arrangement of the valves ( controls ) in a system, some of which still exist side by side. In hydraulics: A distinction