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Bieri Hydraulic Pressure Valves

Bieri DVM Pressure Relief Valves

Stable flow over the entire flow range casued by exact pressure control and low hysteresis are the hallmarks of the Bieri DVM pressure relief valve. Low pressure loss and adjustability over the entire pressure range are features of this direct-operated, spring-loaded seated valve, which can be used in a manifold or as a cartridge valve alone. Zinc-coated exterior surfaces and hardened and ground valve parts for exceptional durability and long service life.

• Hydraulic fluid: mineral oil (other fluids on request)
• Fluid temperature range: -20 to 120 °C
• Ambient temperature range: -20 to 120 °C
• Viscosity range: 7.4 to 420 mm2/s
• NG 4 porting
• Max. operating pressure:
  • Port 1 - 700 bar
  • Port 2 - 100 bar
• Pressure setting range: Port 1 - 50 to 700 bar
• Max. flow rate: 30 l/min
• Weight 0.14 kg (cartridge)
• Cartridge body made of high tensile steel
• Cone made of hardened steel
• Supporting ring: PTFE

Part Numbers:

• DVM-4B-X-700-V
• DVM-4E-X-700-V
• DVM-4R-X-700-V
• DVM-4B-A-700-V
• DVM-4E-A-700-V
• DVM-4R-A-700-V
• DVM-4B-AB-700-V
• DVM-4E-AB-700-V
• DVM-4R-AB-700-V
• DVM-4B-B-700-V
• DVM-4E-B-700-V
• DVM-4R-B-700-V
• DVM-4B-G1/4VR-700-V
• DVM-4E-G1/4VR-700-V
• DVM-4R-G1/4VR-700-V
• DVM-4B-G3/8VR-700-V
• DVM-4E-G3/8VR-700-V
• DVM-4R-G3/8VR-700-V
• DVM-4B-G3/8-700-V
• DVM-4E-G3/8-700-V
• DVM-4R-G3/8-700-V
• DVM-4B-G1/4-700-V
• DVM-4E-G1/4-700-V
• DVM-4R-G1/4-700-V

Bieri DMM Pressure Reducing Valves

The Bieri DMM pressure reducing valve DMM is direct-operated, spring-loaded and has a leak-free seat. It can be used in a manifold or as a cartridge valve. Options include a check valve and a secondary relief valve.

• Hydraulic fluid: Mineral oil (other fluids on request)
• Fluid temperature range: -20 to 120 °C
• Ambient temperature range: -20 to 120 °C
• Viscosity range: 10 to 420 mm2/s
• NG 4 porting
• Max. operating pressure: port P/A 700/450 bar
• Pressure setting: port A 50 to 450 bar
• Max. flow rate: 30 l/min
• Weight: 0.9 kg (cartridge)
• Cartridge body made of high tensile steel
• Cone made of hardened steel
• Supporting ring made of PTFE

Part Numbers:

 

Bieri DAM Unloading Valve

This Bieri unloading valve is combined in a manifold with a check valve. Offering a dual-pressure-system, this unloading valve is used with a low-pressure and a high-pressure pump, which both supply pressure to the same working port. Pressure is adjustable over the entire range.

• Hydraulic fluid: mineral oil (other fluids on request)
• Fluid temperature range: -20 to 120 °C
• Ambient temperature range: -20 to 120 °C
• Viscosity range: 10 to 400 mm2/s
• NG 4 porting
• Max. operating pressure:
  • Port HP - 700 bar
  • Port LP - 150 bar
• Pressure setting range port LP 25 to 150 bar
• Max. flow rate 40 l/min-
• Cartridge body made of zinc-plated steel
• Cone made of hardened steel
• Manifold made of corrosion-free steel
• Back up ring made of PTFE

Part Numbers:

• DAM-4E-X-150-V
• DAM-4B-X-150-V
• DAM-4R-X-150-V
• DAM-4E-VR-150-V
• DAM-4B-VR-150-V
• DAM-4R-VR-150-V
• DAM-4E-VRDV-150-V
• DAM-4B-VRDV-150-V
• DAM-4R-VRDV-150-V
• DAM-4E-VP-150-V
• DAM-4B-VP-150-V
• DAM-4R-VP-150-V
• DAM-4E-VPDV-150-V
• DAM-4B-VPDV-150-V
• DAM-4R-VPDV-150-V
• DAM-4E-DV-150-V
• DAM-4B-DV-150-V
• DAM-4R-DV-150-V

 

Bieri DV700 Pressure Relief Valves

Bieri pressure relief valves with a dumping piston are direct-operated, seated valves used to limit the pressure in a hydraulic circuit. They offer excellent pressure stability and precise pressure adjustment. Can be used as a cartridge valve or as a modular valve.

• Hydraulic fluid: mineral oil (other fluids on request)
• Fluid temperature range:
  • NBR: – 30 bis 80 °C
  • FPM: – 20 bis 80 °C
• Ambient temperature range: – 30 to 50 °C
• Viscosity range 5 to 400 mm2/s
• NG 6 porting
• Max. operating pressure connection:
  • High pressure = 700 bar
  • Low pressure = 350 bar
• Max. flow rate: 25 l/min-
• Housing made of galvanized chromated steel
• Cartridge made of corrosion-resistant steel
• Plastic adjusting knob

Part Numbers:

• DV700-6-E-350-P
• DV700-6-P-350-P
• DV700-6-A-350-P
• DV700-6-B-350-P
• DV700-6-AB-350-P
• DV700-6-PA-350-P
• DV700-6-E-700-P
• DV700-6-P-700-P
• DV700-6-A-700-P
• DV700-6-B-700-P
• DV700-6-AB-700-P
• DV700-6-PA-700-P
• DV700-6-E-350-V
• DV700-6-P-350-V
• DV700-6-A-350-V
• DV700-6-B-350-V
• DV700-6-AB-350-V
• DV700-6-PA-350-V
• DV700-6-E-700-V
• DV700-6-P-700-V
• DV700-6-A-700-V
• DV700-6-B-700-V
• DV700-6-AB-700-V
• DV700-6-PA-700-V

Bieri DA700 Unloading Valves

The DA700 unloading valves offer stable pressure control and precise pressure adjustment.

• Hydraulic fluid: mineral oil (other fluids on request)
• Fluid temperature range:
  • NBR: – 30 to 80 °C
  • FPM: – 20 to 80 °C
• Ambient temperature range – 30 to 50 °C
• Viscosity range 5 to 400 mm2/s
• Porting NG 6 according to DIN 24340 / ISO 4401 / CETOP RP 121 H
• Max. operating pressure connection:
  • P - 700 bar
  • A, T - 350 bar
• Max. flow rate 25 l/min
• Weight 2.1 kg

Bieri DM700 Pressure Reducing Valves

The Bieri DM700 is a direct-operated, poppet-type valve mounted in a "sandwich plate" style of hydraulic manifold. Can be used in hydraulic circuits where the nominal pressure and a reduced pressure is needed.

• Hydraulic fluid: mineral oil (other fluids on request)
• Fluid temperature range:
  • NBR: – 30 at 80 °C
  • FPM: – 20 at 80 °C
• Ambient temperature range: – 30 to 50 °C
• Viscosity range: 5 to 400 mm2/s
• NG 6 porting
• Max. operating pressure connection: P, A, B - 700 bar
• Max. pressure admissible connection: T - 350 bar
• Reduced pressure range: 70 bar – 600 bar
• Hysteresis up to 20 % of reduced pressure
• Max. pressure limitation in reduced pressure side: 15 % over reduced pressure
• Max. flow rate: 25 l/min
• Weight 2.3 kg
• Housing surface treatment: steel - galvanized and black chromated
• Cartridge: corrosion-resistant steel
• Plastic adjusting knob

Part Numbers:

• DM700-6-A
• DM700-6-B

 

Bieri SBV700 Load Holding & Lowering Valves

The Bieri SBV700 employs double acting cylinders to hold loads stationary and for controlled lowering of loads. It is mounted as a seated valve in a "sandwich plate" style of hydraulic manifold.

• Hydraulic fluid: mineral oil (other fluids on request)
• Fluid temperature range:
  • NBR: -30 to 80 °C
  • FPM: -20 to 80 °C
• Ambient temperature range: -30 to 50 °C
• Viscosity range: 5 to 400 mm2/s
• NG 6 porting
• Max. operating pressure:
  • Ports P, A, B - 700 bar
  • Port T - 350 bar
• Pilot pressure: adjustable 50 bar up to 350 bar
• Max. flow rate 25 l/min-
• Weight 2,3 kg
• Housing: galvanized, black chromated steel
• Cartridge: corrosion-resistant steel
• Plastic adjusting knob

Part Numbers:

• SBV700-6-A-P
• SBV700-6-B-P
• SBV700-6-L-P
• SBV700-6-F-P
• SBV700-6-A-V
• SBV700-6-B-V
• SBV700-6-L-V
• SBV700-6-F-V

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Links to Other Bieri Hydraulic Products

• Bieri Hydraulic Main Page
• Axial Piston Pumps
• Radial Piston Pumps
• Combination Hydraulic Pumps
• Directional Valves
• Pressure Valves
• Flow Control Valves
• Shut-off Valves
• Proportional Valves
• Inline Valves
• Pressure Switches
• Oil Level Switches