MOOG G761-3001 Electro-hydraulic Servo Valve

Product Description

MOOG G761-3001 is a two-stage nozzle-flapper electro-hydraulic servo valve from the G761 family, mechanical feedback (MFB) 4-way flow control servovalve. It is a classic critical component for gas turbine and steam turbine fuel and actuator control. The torque motor drives the nozzle-flapper pilot stage with main spool mechanical feedback. Without on-board electronics, it accepts analog current command to precisely regulate hydraulic flow and direction. It features fast response, high resolution and low hysteresis for high-precision closed-loop position, speed and force control, widely used in turbomachinery hydraulic actuators.

Specifications

• Part Number: G761-3001
• Manufacturer: MOOG
• Construction: Two-stage, nozzle-flapper, mechanical feedback, 4-way
• Rated Flow: 38 L/min at ΔP=35 bar per land
• Rated Input Signal: ±40 mA
• Max Supply Pressure: 315 bar (4500 psi)
• Max Return Pressure: 210 bar
• Hysteresis: ≤3%
• Threshold (Resolution): ≤0.5%
• Step Response: Typical 7 ms (0~100%)
• Mounting Standard: ISO 10372-04 (Size 04)
• Fluid Media: Anti-wear hydraulic oil, fire-resistant phosphate ester fluid
• Fluid Cleanliness: NAS 1638 Class 6 or better
• Operating Temperature: -20℃ ~ +80℃
• Weight: Approx. 1.2 kg

Application

1. Hydraulic actuators for gas & steam turbines (fuel valves, IGV inlet guide vane control)
2. Turbine governing and hydraulic servo actuator closed-loop position control in power plants
3. High-precision hydraulic servo systems for rolling mills, material testers and shakers
4. Hydraulic anti-surge valve actuation for petrochemical compressor trains
5. Precision hydraulic control loops for aerospace test rigs and dynamic loading equipment

Series Part Numbers (MOOG G761 Servovalve Family)

• G761-3001B
• G761-3002B
• G761-3003B
• G761-3004B
• G761-3005B
• G761-3024B (This item)
• G761-3033B