Directional poppet valves WVH-4B

BIERI directional poppet valves WVH-4B are directly operated, seat tight valves of size NG4, suitable for constant pressure ranges up to 700 bar and flow rates up to 12 l/min. They can be mounted on single subplates as "stand-alone" valves or in valve banks with subplates.

Operating pressure up to 700 bar
Max. flow rate 12 l/Min
Porting NG 4

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WVH-4B

­Alternate products:

Directional poppet valves WVH-4B-BI

Cartridge-Wegesitzventil WS700

Features Advantages
Surface mount body NG4, 700 bar, -20°C 2/2-, 3/2-, 3/3 and 4/2-seat tight way functions with defined pattern
Directly operated Safe and fast switching at all pressure at all pressure constallations
Seat tight Maximum wear resistance and insensitiveness against contamination
360° turnable and exchangeable plug-in coil Arbitrary position of solenoid coil, replacement of coils without opening of the pressure tight spaces
Corrosion resistant Compact, low weight
 

Applications

  • Machine tools – auxiliary functions
  • Presses 
  • System engineering
  • Lifting and transport systems
  • Hydraulic tools
  • Test benches and systems
  • Construction & recycling
  • Power packs

Design

  • With hardened balls and seats
  • Mounting on single subplates as “stand-alone” valves or in valve banks with subplates
    (see technical data sheets EAP-4B and APH/X-4B)
  • As 2/2, 3/2, 4/2 (pilot operated) or 3/3 valve with solenoid
    or alternative actuation
  • With sealed manual override

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 bis 400 mm²/s
Porting NG 4 according to Bieri standard
Max. operating pressure P, A, B 700 bar
Pressure difference from P to A, B to T must be adhered! (pp ≥ pA (pB) ≥ pT)
Max. operating pressure T 700 bar
Max. flow rate 12 l/min
Filtration (recommendation) According to NAS 1638, class 6 resp. ISO/DIN 4406 17/15/12
Duty cycle ED 100 %
Solenoid voltage (nominal power) 24 VDC (27.2 W), 110 VAC (25 W), 230 VAC (25 W)
Voltage tolerance +/– 10 %
Switching time 40 – 120 ms
Degree of protection IP 63 according to EN 60529/DIN 40050 (solenoid IP 65)
Weight See technical data sheet
Material Corrosion-resistant steel and aluminium
(coil housing: ZnFe - corrosion protection)