Moog G761-3024B Two-Stage Mechanical Feedback Hydraulic Servo Valve

Product Description

The Moog G761-3024B belongs to the classic G761 (761 series) high-performance two-stage hydraulic servo valve with nozzle-flapper torque motor pilot stage and mechanical spool feedback. It converts ±10mA analog electrical command signal into proportional hydraulic flow output, used for closed-loop precise control of position, speed, force and pressure in hydraulic systems. It is widely adopted in test benches, turbine governors, material testing machines and high-precision industrial hydraulic systems.

Features

• Part Number: G761-3024B, Brand: Moog (USA)
• Structure: 2-stage, nozzle-flapper pilot, mechanical feedback (MFB)
• Input signal: ±10mA standard analog control current
• Rated flow: 38 L/min @ 35bar pressure drop per land
• Max working pressure: 315 bar (4500 psi)
• Return port limit: Normally ≤70 bar back pressure
• Performance: Low hysteresis, high resolution, fast frequency response
• Fluid: Anti-wear hydraulic oil, recommended NAS 1638 Class 6 or cleaner
• Mounting: Standard 4-hole servo valve mounting pattern
• Connector: Military-style electrical plug
• Certifications: CE, EMC compliant for industrial closed-loop hydraulic control
• Manufacturer Status: Mature legacy servo valve; available as original new, calibrated surplus and fully refurbished units
• Typical gross weight: approx 3.2 kg, origin: United States

Applications

• Steam turbine, gas turbine hydraulic governing and actuator control
• Material testing machine, fatigue test bench, hydraulic vibration table
• Steel mill rolling mill, continuous casting equipment hydraulic loop
• Aerospace component test, flight simulation platform hydraulic control
• Legacy hydraulic servo system overhaul, spare replacement and calibration

FAQ

Q: What is the difference between G761-3024B and G761-3005B?
A: Different rated flow. G761-3005B is 10 L/min, while G761-3024B is 38 L/min, flow spool and internal orifice are not interchangeable.

Q: Does this servo valve need a dedicated servo amplifier?
A: Yes, it requires a ±10mA current output servo amplifier to drive the torque motor; voltage signal cannot directly drive it.

Q: What regular maintenance is required?
A: Strict oil cleanliness control, periodic zero and span calibration, overhaul includes spool cleaning, seal replacement and dynamic performance test on servo valve test bench.