Servovalves and Proportional Valves

Direct-Operated Servo Valves for Analog Signals D633 and D634 Series

ISO 4401 Size 03 and 05
  • Directly driven by linear force motor: No pilot flow required
  • Linear force motor with high force range (improves operating limits): No flow limitations
  • Directly driven design: Pressure-independent dynamic performance
  • Low current consumption at and near hydraulic null
  • Spool is in spring-centered position at loss of power supply: Actuator stops

Specifications

  • Hydraulic Data
  • Rated Flow

    5 to 100 l/min (1.3 to 26.3 gpm) @ ∆p 35 bar (500 psi) per land

  • Maximum Flow

    180 l/min (47 gpm) size 05

  • Maximum Operating Pressure

    350 bar (5,000 psi)

  • Mounting Pattern

    ISO 4401 Size 03 and 05 (NG 6 and 10)

  • 100% Step Response

    12 ms @ 210 bar (3,000 psi)

  • Electrical Data
  • Supply Voltage

    24 VDC (18 to 32 VDC)

  • Rated Signal Options

    +/-10 V, +/-10 mA and 4-20 mA