G631 and 631 Series Servo Valves

Direct-Operated Flow Control for Analog Signals

 

  • 2-stage flow control Mechanical Feedback (MFB) Servo valve
  • Low friction double nozzle pilot stage for high resolution and low hysteresis
  • Rugged, long-life design suitable for a wide range of machines
  • Small body size
  • Integrated fail-safe options enables machine builders to reduce componentry
  • Field-configurable 5th port for separate pilot supply offers greater flexibility
  • Field-replaceable first stage disc filter for ease of maintenance

 

Specifications
Hydraulic Data  
Rated Flow*
3.8 to 78  l/min (1 to 20.7 gpm)
Standard Configurations 5, 10, 20, 40, 60, 75 l/min
(1.3, 2.5, 5, 10, 15, 20 gpm)
Max. Operating Pressure 210, 310 or 350 bar
(3,000, 4,500 or 5,000 psi)
   
Performance Data  
100% Step Response** 18 ms
Frequency Response*** 75 Hz
   
Electrical Data  
Rated Signal**** 30 to 150 mA 
Standard Configurations 30, 100 mA
   
Physical Data  
Size
(Mounting Pattern)
Size 05 (ISO 4401-05-05-0-94)
Weight 2.2 kg (4.9 lbs)
Additional Options

Intrinsically Safe, Vented Motor Cap, Manual Override, Reverse Polarity

Contact Industrial Application Engineering for additional Flow, Pressure and other options

* @ ∆p 70 bar (1,000 psi)
** Response at 3,000 psi System Pressure
*** at 90° Phase Lag
**** Single Coil