MOOG G771K203A two-stage electro-hydraulic flow servo valve

MOOG G771K203A two-stage electro-hydraulic flow servo valve

G771K203A belongs to the MOOG G771 series two-stage electro-hydraulic flow servo valve, which adopts a nozzle baffle pilot stage+mechanical feedback structure and does not have a built-in amplifier circuit. It needs to be matched with an external servo amplifier for use.
G771K203A is responsible for receiving small current analog command signals output by the controller, accurately converting them into hydraulic oil outputs corresponding to flow rates, controlling hydraulic cylinders/motors, and achieving high-precision servo control of closed-loop position, speed, and force; G771K203A is the core control component of electro-hydraulic servo systems, widely used in hydraulic closed-loop systems with strict requirements for dynamic response and control accuracy, converting weak electrical signals into high-power hydraulic power output.

Product features

1. Two stage dry torque motor+nozzle baffle pilot structure, with low friction, high resolution, and extremely low hysteresis, suitable for high-precision closed-loop control.
2.  Mechanical feedback structure, strong valve core driving force, and better anti pollution ability than some micro servo valves, suitable for continuous industrial working conditions.
3.  When the signal is lost, it automatically returns to zero position, cuts off the hydraulic output, has fault safety characteristics, and avoids the risk of equipment loss of control.
4. Support on-site zero bias adjustment, which can quickly calibrate the zero position after replacement or maintenance, reducing the difficulty of debugging.
5.  Symmetrical valve core design, good consistency of bidirectional flow characteristics, and excellent closed-loop stability of the system.
6.  The valve body is precision machined with aluminum alloy, compact in structure, and installed in accordance with ISO standards, compatible with standard hydraulic integrated blocks.
7.  Wide temperature range design, suitable for harsh industrial environments with high and low temperatures and strong vibrations.
8. We can provide intrinsically safe explosion-proof versions to meet the requirements for use in chemical and oil and gas explosion-proof areas
9.  An external servo amplifier driver is required to adapt to mainstream MOOG and third-party servo controllers.
10.  Mature classic models, with a large circulation of spare parts for existing equipment, and a complete system for maintenance and renovation.

Main product range

• Control system (DCS/PLC/CNC): panel controller, HMI and human-machine interface, industrial PC, CPU processor module, communication module, analog/digital I/O module
• Drive and motion control: frequency converter, servo drive, servo motor, power module
• Robot spare parts: key spare parts such as robot control board, axis computer, servo unit, I/O module, etc
• State monitoring and safety system: vibration monitoring system, safety instrumented system (SIS), redundant controller

Application Industry

The products are widely used in various industrial fields such as metallurgy, oil and gas, petrochemicals, electricity, power transmission and distribution, water conservancy, water treatment and environmental protection, coal mining, aluminum industry, glass manufacturing, paper and printing, textile printing and dyeing, machinery manufacturing, electronics manufacturing, automobile manufacturing, plastic machinery, boiler heating, energy, etc.

MOOG G771K203A two-stage electro-hydraulic flow servo valve

Main brand

————————Shenzhen Changxin Automation Equipment Co Ltd -————————

Products that have been released are welcome for consultation. Due to the wide variety of models, we were unable to upload physical images one by one!

Parameter Specifications