4/3 Servo Valves (280-350 Bar)

Ideal for working pressures of either 280 or 350 bar, this valve model is highly robust and provides advanced control functionality. Bosch Rexroth has designed this valve to feature pilot operation with electrical position feedback, and on-board electronics.

View our technical specifications below

Servo Valve specifications

  • Sizes: (NG) 10, 16, 25, 27, 35
  • Unit series: 3X
  • Maximum working pressure: P, A, B 350 bar (NG27: 280 bar)
  • Nominal flow: 40…1000 l/min (Δp = 10 bar)


  • Pilot operated 4/3-way servo solenoid directional control valves NG10 to NG35
  • Pilot valve NG6, with control piston and sleeve in servo quality,
    actuated on one side, 4/4 fail-safe position when switched off
  • Control solenoid with electric position feedback and on-board electronics (OBE),
    calibrated at the factory
  • Main stage in servo quality with position feedback

Flow characteristic

  • M = Progressive with fine metering notch
  • P = Non-linear curve
  • L = Linear
  • Electrical connection 6P+PE
  • Signal input of differential amplifier with interface A1 ±10 V, or interface F1 4...20 mA (Rsh = 200 Ω)

Speak to our hydraulics division about your factory automation


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