MOOG D634 Series Servo Valve Technical Features and Applications

I. Core Technical Features

• Direct-acting Design: The permanent magnet linear force motor directly drives the valve core without the need for a control oil source, featuring low energy consumption, strong pollution resistance, and stable operation.
• High-precision Closed-loop Control: Integrated with a valve core position control circuit, it has low hysteresis and high resolution, enabling precise control of flow and pressure, and supporting zero-position adjustment for easy maintenance.
• High Dynamic Response: The step response time is ≤ 20ms, which is suitable for scenarios requiring high real-time performance such as precision testing and simulation.
• Wide Adaptability: It supports multiple control signal inputs (±10V voltage signal, 4-20mA current signal) and can be used as a throttling valve, adapting to various industrial hydraulic systems.
• Integrated Electronic Design: Built-in 24V integrated amplifier board (power supply range: 19V-32V DC), with a maximum current of 2.2A, requiring a 2.5A time-delay fuse for protection.

II. Main Applications

1. Industrial Molding and Forging Equipment

• Injection and Blow Molding Equipment: Precisely controls clamping force, injection speed, and pressure during plastic molding to ensure the accuracy of plastic parts and avoid molding defects.
• Die-casting Machines: Controls injection speed and holding pressure to improve the quality of die-cast parts and adapt to non-ferrous metal die-casting production lines.
• Heavy-duty Presses: Controls the motion accuracy and pressure output of the slider, meeting the needs of large-flow drive in heavy industrial forming processing.

2. Precision Testing and Simulation Equipment

• Material Testing Machines: Controls test force, displacement, and strain during material performance testing to ensure the accuracy of test data.
• Simulation Simulators: Applied to the motion control of flight simulators and ship simulators, simulating various motion scenarios through precise control of hydraulic actuators to provide a realistic operating experience.

3. Metallurgical and Power Equipment

• Metallurgical Rolling Mills: Used for shape control of precision rolling mills, adjusting the position and pressure of rolls to ensure the rolling accuracy of steel products.
• Steam Turbine Units: Controls the hydraulic actuators of the unit to ensure stable operation and improve power generation efficiency.

4. Marine and Special Equipment

• Deep-sea Equipment: Suitable for the hydraulic control of underwater robots (ROV/AUV), including thruster control and manipulator control, adapting to high-pressure and high-humidity underwater environments.
• Marine Engineering Equipment: Used in ship steering gears, anti-rolling fins, and wave compensation cranes to improve the operational stability of marine equipment.

5. Other Industrial Equipment

• Wood Processing Equipment: Controls the hydraulic system of wood cutting and pressing equipment to improve processing accuracy and efficiency.
• Paper-making Machinery: Adjusts the pressure of press rolls and the tension of the wire section to ensure uniform paper thickness.
• Precision Machine Tools: Used in the feed system and spindle control of CNC machine tools to improve processing accuracy.

Supplementary Notes