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Predominantly process-dependent signal. Here attention is to be paid to the duality of release and locking: The reversal of locking can correspond to a release (DIN 19 237).

A newer group of materials between elastomers and thermoplastics : They have the properties of an elastomer up to approximately 70° C (high strength, good elasticity), but react like thermoplastics at

Commonly used term for binary valves ( switching valves ), which only open or close. Alternative: Continuously adjustable valves

Controller concepts

System in which the flow rate remains constant regardless of how high the load pressure is, assuming any pressure-controlled leakage losses are ignored. Constant flow systems in an open circuit are th

Provides information on the behaviour of the controlled variable with a changing reference variable , but constant disturbance variable . The controlled variable responds to external effects on the co

Operating viscosity

Drive system, in which the flow rate for all movements is provided directly from pumps (without a storage facility). If different speeds are required, constant pumps are used in throttle control and v

In accordance with ISO 1219-1 load-holding valves are classed in the group of pressure control valves. They prevent double-acting consumers (such as hydraulic cylinders and hydraulic motors) that have

Piloted check valve that is used to fill the cylinder chamber behind a piston moving rapidly under its own weight or with a piston for rapid traverse with unpressurised oil from the tank. The high vel