MOOG 351A7620P0102

Product Description

MOOG 351A7620P0102 is a high‑performance electro‑hydraulic servo valve manufactured by Moog Inc. It adopts a two‑stage nozzle‑flapper torque motor structure with mechanical spool position feedback. The valve converts electrical command signals into precise hydraulic flow output, featuring fast dynamic response, high repeatability and low hysteresis. It is widely used in closed‑loop hydraulic control systems requiring accurate position, speed, pressure or force regulation.

Product Functions

• Convert analog electrical control signals into proportional hydraulic flow
• Closed‑loop control of actuator position, velocity and output force
• High‑speed dynamic response for rapid system correction
• Built‑in spool position feedback to improve control linearity and stability
• Realize continuous stepless hydraulic regulation for precision motion control

Application Scenarios

• Material fatigue test benches and vibration simulation equipment
• Metal forming machinery, hydraulic presses and injection molding machines
• Aerospace flight simulation and actuator test systems
• Power turbine governor and steam turbine auxiliary control units
• High‑precision industrial automation hydraulic motion platforms

Common Problems

• Slow response or poor precision: Caused by contaminated hydraulic oil, clogged filter or internal nozzle blockage.
• Spool drift and unstable output: Usually due to torque motor aging, feedback wire fatigue or oil pollution.
• No hydraulic output despite normal electric signal: Pilot stage blockage, coil burnout or insufficient supply oil pressure.
• Excessive noise and vibration: Oil cavitation, improper installation or loose internal mechanical components.
• Hysteresis increases obviously: Mechanical wear of spool and sleeve or degradation of feedback mechanism.