Hydac Fluidtechnik Gmbh

Maximilian Felix Hess

Markus Bill

Philipp Hilzendegen

A discharge pressure scale () includes a valve housing () having a functional connector (A), a return flow connector (T) and a user connector (). A valve piston () is guided such that it moves longitudinally against the effect of an energy accumulator (), moving from a respective opening or regulating position, against a valve seat (), into a closed position. The user connector () and return flow connectors (T) are separated from one another. The fluid pressure present at the user connector () can be guided onto a pressure-active surface (A*) of the valve piston () by a pressure compensation device () in such a way that it moves into its respective opening or regulating position in a pressure-compensated manner due to the force of the energy accumulator ().

Discharge pressure scale and lifting-lowering device having a discharge pressure scale of this type

A pressure-regulating valve has a valve piston () subjected to the action of an energy store and guided longitudinally in a valve housing (). The valve housing has a supply port (), a utility port () and a tank port () actuated by a control part () closing with a sealing action. In connecting from the supply port to the utility port, a pressure reduction function is realized. In a fluidic connection from the utility port to the tank port, a pressure-limiting function is realized. The control part () has a control rod () with two control bodies () spaced apart from one another. One control body () controls the connection between supply port () and utility port (). The other control body () controls the connection between utility port () and tank port ().

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Saarbruecken, Germany

Maximilian Felix Hess