Bieri Hydraulik AG, with a staff of Swiss professionals, has more than 60 years' experience in the development, manufacture and sales of quality hydraulics extending from standard high pressure components to special solutions – covering all pressure ranges up to 1000 bar.

Like HYDAC, Bieri’s standard components and special solutions are used throughout a wide range of industries such as mechanical engineering, offshore, shipbuilding, medical technology, power stations, mining, defense, public transport and paper just to name a few.


Bieri provides a complete range of high pressure hydraulic components:

  • Axial and radial piston pumps (single or multiple outlets)
  • Seated valves (manually or solenoid operated)
  • Pressure valves (pressure relief valves, unloading valves, pressure reducing valves, load holding and lowering valves)
  • Flow control valves (orifice plates, throttle valves)
  • Non-return valves (shut-off valves, pilot operated check valves)
  • Manual gate valves
  • Pressure switches
  • Oil level switches


BIERI focuses on three different competence areas:

Medical engineering:

Applications in medical engineering need fine hydraulics that can perform extraordinary tasks, especially in terms of reliability and quality and must remain leakage free.For many years BIERI has been a worldwide specialist of medical hydraulics and delivers components and systems to manufacturers of patient moving equipment including operation tables and delivery beds.

High pressure components and systems:

A pressure range from 400 bar is usually considered high pressure and part of Bieri's expertise is dedicated to pressures between 400 and 1000 bar as many applications need this range. BIERI high pressure components and systems operate worldwide in demanding conditions including harsh environment and heavy duty cycles, eg.:

  • Construction industry, maintenance and civil engineering technology
  • Energy and High-voltage installations
  • Industry
  • Machine tools industry
  • Material handling technology
  • Metallurgy
  • Mining equipment
  • Motion technology
  • Naval and ship lifting technology
  • Oil exploration and offshore technology
  • Plastic and die cast machinery
  • Press tools and presses
  • Rescue systems
  • Research technology
  • Stage technology
  • Testing equipment
  • Wind energy
  • Wood, pulp and paper industry

Customized special hydraulic components:

BIERI is reputed for its ability to develop and produce customized hydraulic components and systems for all pressure ranges including pumps, valves and cylinders for all kinds of application. Examples of application areas where BIERI has developed a special know-how:

  • Transport technology, railway industry
  • Heavy-lifting equipment: pumps and valves
  • Pressure testing equipment for industry

And many others…

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BIERI - Bi-directional Sealed Valve WVM-4B-Bi
BIERI - Micro-Axial piston pumps AKP