Pressure relief valves DV700

The BIERI series WVM-6I consists of direct solenoid operated leakage free seated valves, applicable for high duty cycles. The modular principle of the main components allows for a huge variety of circuit symbols: 2/2-, 3/2-, 3/3-, 4/2-, 4/3- and 4/4-way functions with positive and also negative overlap. Consequently these valves are superior and space-saving alternatives to spool valves which can require additional leackage free shutoff valves.

Operating pressure up to 500 bar
Max. flow rate 25 l/Min
Porting NG 6 acc. DIN 24340 / ISO 4401 / CETOP RP 121 H

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[Translate to EN:] Druckbegrenzungsventil Typ DV700
Features Advantages
Patented inline arrangement of cone / seat elements Leakage free (double tight)
Pressure compensated design of valve cones, high magnetic force and strong return spring Safe and fast switching, bidirectional flow on open shift position and double tight with leakage free tightness in closed position
Hardened seat elements (cone and seat) Long operating lifetime and reliability
Zinc nickel coated coils, valve body made of corrosion resistant heat-treatment steel Arbitrary position of solenoid coil, replacement of coils without opening of the pressure tight spaces
Check valves and orifices can be integrated High corrosion resistance
Plate mounted valve with pattern according ISO 4401-03 360° turnable and exchangeable plug-in coil

Features

  • Direct operated valve
  • High degree of pressure stability
  • Safe operation
  • Precise pressure adjustment
  • Maximum pressure setting with lock nut

Applications

  • as cartridge  
  • as modular valve with one or two cartridges

Technical data

Hydraulic fluid mineral oil according to DIN 51524 (other fluids on request)
Fluid temperature range – 20 to 80 °C
Ambient temperature range – 30 to 50 °C
Viscosity range 5 to 400 mm²/s
Portin NG 6 according to DIN 24340 / ISO 4401 / CETOP RP 121 H
Max. operating pressure connection HP 700 bar
Max. operating pressure connection LP 350 bar
Max. flow rate 25 l/min
Filtration (recommentation) according to NAS 1638, class 6 or ISO / DIN 4406 17/15/12
Weight see dimension drawings
Material / surface treatment housing: steel, galvanized, chromated
cartridge: steel corrosion resistant
adjusting knob: plastic