31 Series Servo Valves

Direct-Operated Flow Control for Analog Signals

Micro-Hydraulics

  • 2-stage flow control Mechanical Feedback Servo Valve
  • Low friction double nozzle pilot stage for high resolution and low hysteresis
  • Rugged construction designed for extreme conditions (High shock, vibration or pressure)
  • Ultra-Compact, light weight package
  • High response for improved control capability
  • Stainless steel body and integrated torque motor in an environmentally sealed compartment
Specifications
Hydraulic Data  
Rated Flow*
3.8 to 15.0 l/min ( 1.0 to 4.0 gpm)
Standard Configurations 3.8, 9.4, 15.0 l/min
(1.0, 2.5, 4.0 gpm)
Max. Operating Pressure 275 bar (4,000 psi)
   
Performance Data  
100% Step Response** 2.5 ms
Frequency Response*** 200 Hz
   
Electrical Data  
Rated Signal**** 10 to 40 mA 
Standard Configurations 10, 20, 40 mA
   
Physical Data  
Size
(Mounting Pattern)
Size 2 (ISO 10372-02-02-0-92)
Weight 370 g (13 oz)
Additional Options

Vented Motor Cap, 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