Primetals Technologies Austria Gmbh

Gudrun Mikota

Josef Mikota

A hydraulic valve () includes an actuation device () for a control piston (). The valve () is simple, robust, and insensitive to dirt. The is an actuation device () has a flexurally rigid metal plate (), with an outer region fixed to the housing () in a stationary manner. A piezoelectric actuator () can bend a central region of the metal plate (); and a pressure chamber () is filled with a pressurized liquid during operation. The pressure chamber () is delimited by the housing (), the metal plate (), and the control piston (). The metal plate () seals the pressure chamber (), and the pressure chamber () acts on the control piston (). A surface area AP of the metal plate () over the pressure chamber () is larger than the cross-sectional area Aof the control piston ().

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Gallneukirchen, Austria

Gudrun Mikota