Moog Inc

1.Core Functions

Electro-hydraulic conversion & hydraulic power amplification: Convert low-current analog electrical command signal into proportional hydraulic flow output via torque motor and two-stage hydraulic amplification.
Precision flow control: Output hydraulic flow proportional to input analog current signal, to drive hydraulic actuators (cylinders / hydraulic motors).www.plcva.com
Mechanical feedback (MFB): Cantilever feedback spring feeds back spool position to the pilot stage; high resolution, low hysteresis and excellent linearity for closed-loop control.
Dual-nozzle flapper pilot stage: Provides fast dynamic response, stable null performance and strong anti-interference capability.
4-way spool control: Standard 4-way throttling spool design, suitable for most closed-loop hydraulic servo systems.
Built-in filtration: Replaceable first-stage filter protects the delicate nozzle-flapper assembly from oil contamination damage.
Fail-safe design: Maintains safe neutral position upon loss of electrical control signal, protecting machinery from runaway movement.

MOOG G631-3014B Electro-hydraulic Servo Valve

Material testing machines: Static & dynamic fatigue testers, universal tensile test benches, force / displacement closed-loop control.
Aerospace simulation: Flight motion simulators, hydraulic actuation test rigs for aircraft component qualification.
Steel & metal processing: Hydraulic roll gap control, strip tension control in rolling mills.
Shock & vibration test equipment: High-frequency hydraulic vibration shakers and environmental test systems.
Heavy industry precision automation: Large hydraulic presses, structural loading test benches.
Marine & energy equipment: Precision hydraulic actuators for offshore and power generation test systems.www.plcva.com