Newsletter 2022/08

Newsletter DB 500/700/1000

New pressure reliefe valve series DB 500/700/1000

The new pressure relief valve DB is available in 500, 700 and 1000 bar versions. This valve series is radially sealing and excellently suited for demanding applications in dynamic pressure systems, clamping technology & fixture construction, hydraulic tools as well as many other areas of high-pressure hydraulics. Optionally, the DB can also be ordered as a back pressure compensated version.

It also serves as a replacement product for a number of other pressure relief valves from BIERI such as DVM, DV700, DV1000, DV2.





  • Operating pressuge up to 1000 bar
  • Flow rate up to 25 l/min
  • Porting NG6 ISO
  • Back pressure compensated version available


Our products and services



You will find powerful Radial Piston Pumps up to 1000 bar as well as space-optimizing Axial Piston Pumps with the smallest flow rates and high pressures.


Our valves in nominal sizes 4 and 6 with pressures up to 1000 bar have been well tested and are reliable. They are available in several switching positions and designs.

Systems and accessories

Modular High-Pressure Power Units, Pressure Switches, Level Switches and various accessories complete our product range.

Bieri Hydraulik AG
Könizstrasse 274
CH-3097 Liebefeld

Tel. +41 31 970 09 09