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
| Parameter | Specification |
|---|---|
| Product Type | Electro-Hydraulic Servo Valve |
| Series | G771 |
| Model | G771K226A (H10FOFA4V14) |
| Rated Flow | 10 GPM (≈ 2.5 LPM) |
| Maximum Operating Pressure | 3000 psi (210 bar) |
| Response Time | ~4 ms |
| Seal Material | FKM (Viton) |
| Mounting Pattern | ISO Size 02 |
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 GE MOOG Schneider
Woodward HIMA Honeywell Emerson Foxboro
First hand source, affordable price. Spot inventory!
•Shipping Port: Xiamen
•Ship to you via Fedex/DHL/TNT/UPS/EMS
•Package: Original packing with cartons
Our Main Brands
DCS/PLC/TSI Manufacturers:
ABB, GE, Allen Bradley, Honeywell, Emerson, Bently Nevada, Prosoft, Siemens, Westinghouse, Triconex, Foxboro, ICS Triplex, Hima, Schneider, Yokogawa, Woodward, B&R, KEBA, etc.
Product Categories & Models
1. Distributed Control System (DCS)
- ABB:3AUA0000110429, SYSCON2 746924
- Invensys Foxboro:FBM214, FBM242, B0123HE
- Invensys Triconex:3625, 3700A, 3604E
- Woodward:5462-758B
- HIMA:F2-DO-16-02, F8650E
- Yokogawa:SAI143-S03 S1, F9342L-02
- Honeywell:51402497-200, 51403519-160, 51199194-100, CC-PDO801
- Emerson:KJ4001X1-NB1, 12P3368X012
2. Programmable Logic Controller (PLC)
- Rockwell/Allen Bradley:1734-IB8, 1734-OB8, 1769-L18ER-BB1B, 1756-IM16I
- ICS Triplex:T8461, T8850, T8403, T8431, T8831, T8310
- Schneider Modicon:140DDI85300
- GE Fanuc:IS210AEPSG2B, IS220UCSAH1A, IS215ACLEH1A, IS210AEAAH1B
- Siemens:6ES7331-1KF02-0AB0
- Prosoft:MVI46-DFNT
- Bachmann:MPC240
- Woodhead:9905-068 2301A
3. Turbine Supervisory Instrumentation (TSI)
- Bently Nevada:3500/22M, 138607-01, 3500/25, 3500/53, 3500/32M 149986-02
- EPRO:MMS6110, MMS6120, MMS6220, MMS6312, MMS6410, 6423, 6424
- ENTEK:EK C6622HS, XM124, 1440-SDM02-01RA
There are no reviews yet.