MOOG G771K226A Servo Valve

MOOG G771K226A Electro-Hydraulic Servo Valve – Product Overview, Specs & Applications

Introduction

The MOOG G771K226A is a high-performance two-stage electro-hydraulic servo valve designed for precise flow and pressure control in demanding industrial and motion-control systems. Manufactured by Moog Inc., the G771 series is widely recognized for reliability, fast response, and exceptional accuracy in critical hydraulic applications.

The G771K226A is the upgraded replacement for the earlier G771K226 model and is commonly used in mid-flow industrial servo systems.

Key Features of MOOG G771K226A

High-Precision Two-Stage Servo Design

The valve uses a dry torque motor and double nozzle-flapper pilot stage, delivering:

• Excellent dynamic response
• High spool driving force
• Extremely low hysteresis
• Superior repeatability and resolution

Fast Response and Stable Performance

With a typical response time of approximately 4 ms, the G771K226A provides rapid and stable control, making it ideal for high-speed servo applications and closed-loop hydraulic systems.

Fail-Safe and Reliable Operation

• Loss of electrical signal automatically returns the spool to the zero (neutral) position
• Factory calibrated with field-adjustable null bias
• Designed for long service life in harsh industrial environments

Wide Fluid Compatibility

The valve supports various hydraulic fluids and is engineered for consistent performance under demanding pressure conditions.

Technical Specifications

Typical Applications

The MOOG G771K226A is widely used in industries requiring precise hydraulic motion control:

• Industrial automation and servo motion systems
• Hydraulic test benches and simulation equipment
• Aerospace and defense control systems
• Power generation and turbine control
• Robotics and heavy machinery
• Steel, plastics, and manufacturing equipment

Its 10 GPM mid-flow rating makes it one of the most commonly selected servo valves for industrial hydraulic systems.

Advantages of the G771 Series

The G771 / G772 / G773 servo valve family offers:

• Flow range from 1 to 15 GPM
• Operating pressure up to 3000–5000 psi
• Response times from 4–17 ms
• Proven reliability in mission-critical systems

The G771K226A sits in the mid-flow, high-dynamic performance category, balancing precision, speed, and durability.

Why Choose MOOG G771K226A?

• Industry-proven servo valve technology
• High accuracy and repeatability
• Fast dynamic response
• Robust and long-lasting construction
• Ideal replacement for G771K226

Conclusion

The MOOG G771K226A electro-hydraulic servo valve is a trusted solution for precision hydraulic control. Its fast response, stable performance, and rugged design make it a preferred choice for demanding industrial and high-performance motion-control applications.

Main Brand:

ABB   Allen-Bradley   Alstom   Bently     Emerson   Foxboro

GE    MOOG    Schneider    Woodward    HIMA    Honeywell 

First hand source, affordable price. Spot inventory!

•Shipping Port: Xiamen

•Ship to you via Fedex/DHL/TNT/UPS/EMS

•Package: Original packing with cartons

Why Choose Us?

We stand out in the competitive market through our unwavering commitment to quality, service, and value:

✅ Extensive Product Portfolio
We partner with top-tier brands (ABB, Siemens, Honeywell, Schneider, etc.) to offer a diverse range of industrial automation products, ensuring we meet the unique demands of every customer.

✅ Professional & Customer-Centric Service
Our experienced team provides end-to-end support—from product selection to after-sales service—ensuring a seamless and efficient experience.

✅ Global Supply Chain Network
Through long-term partnerships with domestic and international manufacturers, we offer flexible trade channels, reliable sourcing, and fast delivery.

✅ Competitive Pricing
By optimizing our supply chain and operational efficiency, we provide high-quality products at cost-effective prices without compromising on reliability.