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Wei Xiu zhu
WhatsApp:+852 5796 0986
Wechat:13395077993
Zhejiang Yiwu Beixun Automation Technology Co., Ltd
China (Zhejiang) Pilot Free Trade Zone, No. 2 Chunpai Road, Beiyuan Street, Yiwu City, Jinhua City, 7F 7059
Website：www.bxplc2.com
Email:3076784238@qq.com
The MOOG G771K202 312A6077P004 is a high-performance electro-hydraulic servo valve designed for precision flow control in demanding industrial applications. This 2-stage servo valve utilizes mechanical feedback technology to provide exceptional dynamic response, high resolution, and low hysteresis, making it ideal for systems requiring precise control of position, velocity, pressure, or force.
With its compact design and robust construction, the G771K202 servo valve delivers reliable performance in extreme operating conditions, including high shock, vibration, and pressure environments. It is widely used in aerospace, defense, industrial automation, and other critical applications where superior dynamics and long-term reliability are essential.
Related Series:
MOOG 312A6077P007 G771K208A
MOOG 312A6077P001 G771K200A
Technical Specifications
Hydraulic Specifications
- Rated Flow: 1.9 to 57 L/min (0.5 to 15 GPM)
- Standard Configurations: 4, 10, 19, 38, 57 L/min (1, 2.5, 5, 10, 15 GPM)
- Maximum Operating Pressure: 210 bar (3,000 psi)
- Valve Design: 2-stage, with spool and bushing
- Pilot Stage: Nozzle-flapper
- Mounting Surface: ISO 10372-02-02-0-92
Technical Details
Valve Operation
The MOOG G771K202 servo valve is a 2-stage, flow control, mechanical feedback (MFB) servo valve. The first stage is a double nozzle-flapper pilot stage driven by a dry torque motor. The second stage is a sliding spool that controls the main flow to the actuator.
When an electrical current is applied to the torque motor, it creates a magnetic field that deflects the flapper between the nozzles. This deflection causes a pressure difference across the spool ends, moving the spool to a position proportional to the input signal. The mechanical feedback mechanism (cantilevered spring) provides stability and linearity by opposing the spool movement.
Environmental Considerations
The G771K202 servo valve is designed to operate reliably in challenging environments:
- Temperature Range: -40°C to +135°C (-40°F to +275°F)
- Vibration Resistance: 30 g, 3 axis, 10 Hz to 2 kHz
- Shock Resistance: 30 g, 3 axis
- Ingress Protection: Various options available
- Corrosion Resistance: Stainless steel body and components
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