Pilot-Operated Proportional Valves for Analog Signals D680 Series

ISO 4401 SIZE 05, 07, 08 AND 10

The Moog D680 Series Proportional valve is now optionally available with a closed-loop controlled, D633 Direct Drive Valve as a pilot stage.The advantages of the new pilot stage option are a higher resistance against contamination, optimized dynamics and improved repeatibility. For more details, please refer to the updated product catalog.

Key features :

  • Optimized design of valve bodies for high rated flow
  • High energy efficiency due to D633 pilot valve with low internal leakage
  • Low range of minimum pilot pressure required
  • Integrated amplifier and control electronics for high functional flexibility
  • Excellent dynamic response due to high natural frequency of pilot stage
  • Different fail-safe options available allowing the best fit to application
  • Optionally available: new pilot valve with integrated electronics and position control of the pilot valve
Hydraulic Data  
Rated Flow 30 to 1,500 l/min (8 to 395 gpm) @ ∆p 5 bar (75 psi) per land
Maximum Flow 3,600 l/min (950 gpm) ISO size 10
Maximum Operating Pressure 350 bar (5,000 psi)
Mounting Pattern ISO 4401 Size 05, 07, 08 and 10 (NG 10, 16, 25 and 32)
100% Step Response 10 to 40 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