Bieri

Válvula de alívio de pressão proporcional

Type PDV700 NG 6 up to 25 l/min

Features

  • Pressure ranges: 700, 550, 400 bar
  • Direct operated for low flow, pilot operated for high flow
  • Robust, with force controlled proportional solenoid
  • High degree of pressure stability
  • Linear p-I curve

Applications

As modular valve, for electrical control of supply or working pressure.

  • for remote pressure setting
  • maintaining pressure within small limits, independen of disturbance (especially at closed control circuit)
  • generating any pressure time curves, as ramps, pressure steps, sine curves, etc.
  • for controlled decompression of large oil volumes, for example in presses and accumulators

Technical Data

Hydraulic fluid mineral oil according to DIN 51524 (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

Porting NG 6 according to DIN 24340 / Size 03 according to ISO 4401:2005 / CETOP RP 121 H

Nominal pressure rating 400, 550, 700 bar

Max. operating pressure connection T max. 200 bar recommended pressure at T < 2 bar for optimal stability

Max. operating pressure connection P, A, B 700 bar

Max. flow rate 2 l/min direct operated version, 25 l/min pilot operated version

Filtration according to NAS 1638, class 6 or ISO/DIN 4406:1999, class 17/15/12

Hysterese ≤ 5 % with optimal dither signal

Mounting screws or tie rods

Material / surface treatment galvanized

 

Dúvidas?