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MOOG G771K625A high-performance electro-hydraulic servo valve

The MOOG G771K625A is a high-performance electro-hydraulic servo valve from the G771 Series, designed for precise flow and motion control in demanding hydraulic systems.

Product Details

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MOOG G771K625A

The MOOG G771K625A is a high-performance electro-hydraulic servo valve from the G771 Series, designed for precise flow and motion control in demanding hydraulic systems. It is commonly used in industrial automation, test equipment, power generation, metallurgy, aerospace, and injection molding machinery.

Key Specifications

Parameter Description
Manufacturer Moog Inc.
Model G771K625A
Product Type Electro-hydraulic servo valve
Series G771 / G772 / G773
Control Method Analog signal flow control
Valve Design 2-stage mechanical feedback (MFB) servo valve
Operating Pressure Up to 210–350 bar (3000–5000 psi)
Rated Flow Range Approximately 1.9–57 L/min
Response Time Typically 4–17 ms
Frequency Response Up to 115–215 Hz
Replacement For G771K625

Main Features

  • Direct-operated flow control for analog signals.
  • High dynamic response and excellent positioning accuracy.
  • Low hysteresis and high spool-driving force.
  • Compact, rugged construction for long service life.
  • Suitable for continuous-duty industrial applications.
  • Compatible with PLC, DCS, and advanced motion-control systems.

Typical Applications

  • Steel and metallurgical production lines
  • Hydraulic presses
  • Injection molding machines
  • Turbine control systems
  • Aerospace test stands
  • Robotics and precision motion control equipment
  • Oil & gas hydraulic control systems

Advantages

The G771K625A belongs to Moog's well-known servo valve family, recognized for:

  • Fast response characteristics
  • High reliability under harsh operating conditions
  • Precise hydraulic flow regulation
  • Long-term stability and repeatability
  • Excellent performance in closed-loop control systems

Product Description

MOOG G771K625A Servo Valve is a direct-operated electro-hydraulic servo valve engineered for high-precision flow and motion control applications. Featuring mechanical feedback technology, fast dynamic response, and robust construction, the G771K625A is widely used in industrial automation, hydraulic presses, power generation, aerospace testing, and advanced manufacturing systems. The valve delivers accurate analog signal control, low hysteresis, and reliable operation in demanding environments, making it an ideal solution for critical hydraulic control systems.

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