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Series D79x - Pilot Operated Servo Valves for flow control with analog interface

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The Moog D79x series valves are pilot operated servo valves with integrated electronics, analog interfaces and optional fieldbus interface.

The D79x servo valves have spools that slide in a bushing and are hydraulically pilot-operated. This design allows for higher flows and extreme dynamic performance. 

Valves of this series are available in three stage configuration covering two sizes with a unique mounting pattern.

This series of servo valves has been designed with the most demanding applications in mind and is characterized in particular by its exceptional dynamic performance. Digital electronics and optional fieldbus interfaces add useful functionality to these valves, making them even more versatile. 

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Features:

  • 3-stage valve design for high dynamics
  • Electrical position feedback (LVDT) - No wear
  • Integrated electronics with inverse polarity protection
  • Optional external pilot supply and return connections via additional x and y port in valve body
  • Low threshold and hysteresis, excellent stability at null

 

Specifications
  D791 D792
Control Functions Flow, Pressure, Flow&Pressure (p/Q), Axis (Position, Velocity, Force)
Mounting Pattern ISO 103742-06-05-0-92 Special
Hydraulic Data
Rated Flow at ∆p 35 bar (500 psi) per land

100 to 250 l/min

(26.4 to 66 gpm) 

400 to 1000 l/min

(105.6 to 264.1 gpm)
Maximum Flow 250 l/min (66 gpm) 1100 l/min (290.6 gpm)
Maximum Operating Pressure Port P, A, B - 350 bar (5,000 psi)
Port T with Y internal - 70 bar (1.000 psi)
Port T with Y external - 350 bar (5,000 psi)
Step Response Time for 0 to 100% Step 3 to 10 ms 4 to 12 ms
Electrical Data
Supply Voltage 24 VDC (18 to 32 VDC)
Rated Signal Options +/-10 V, +/-10 mA and 4 to 20 mA
Electrical Connectors 6+PE, 11+PE
Options
Interfaces Fieldbus Interface 
Additional Analoge Transducer Interfaces

Resources

Related Markets

Steel Production Machinery
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