MOOG A08KO4M0VMJ D633 Series Two-stage Electro-hydraulic Servo Valve

Technical Specifications

Model:A08KO4M0VMJ

Brand:MOOG

Product type:D633 Series Two-stage Electro-hydraulic Feedback Hydraulic Servo Valve

Structure:Two-stage amplification,torque motor pilot stage,main spool electrical position feedback

Max working pressure:300bar

Rated control signal:±10V analog signal

Working medium:Mineral hydraulic oil

Connector:Multi-pin aviation electrical connector

Function:Convert analog electric signal into proportional hydraulic flow,closed-loop position,force and pressure control

Dimension:176mm92mm84mm

Weight:2.3kg

Operating temperature:-20℃ ~ +120℃

Storage temperature:-40℃ ~ +130℃

Relative humidity:10~90% non-condensing

Certification:CE

System compatibility

A08KO4M0VMJ belongs to MOOG D633 series servo valve.It applies to material fatigue test bench,vibration simulation equipment and precision hydraulic press,widely used in high-precision closed-loop hydraulic control system.It is spare part for legacy hydraulic equipment overhaul.

Function

A08KO4M0VMJ is two-stage servo valve with electric spool feedback.It adopts torque motor and double nozzle flapper pilot stage,features high linearity and low hysteresis.Real-time spool position electric feedback ensures stable hydraulic flow output proportional to input analog signal for precise hydraulic regulation.

Installation

Mount valve on standard hydraulic manifold,tighten mounting bolts to specified torque.Connect hydraulic oil pipeline and electrical control wiring.Complete oil flushing,parameter calibration and performance test before commissioning.Keep clean during handling,prevent oil contamination.

Interface

‑Multi-pin aviation electrical connector

‑Hydraulic P,T,A,B oil ports

‑Valve identification label

Feature

MOOG D633 series compact high precision servo valve.Typical faults:pilot nozzle blockage,position feedback sensor failure,spool sticking,internal leakage.Inspect oil cleanliness and feedback signal before replacement.

Diagnostic

Fault phenomenon:output flow abnormal,zero drift,slow response,no action.Check oil contamination,electrical wiring,feedback sensor and spool condition.

Product Brief

A08KO4M0VMJ is MOOG D633 series two-stage electro-hydraulic servo valve with electric spool feedback and high control accuracy,used for precision hydraulic test equipment,suitable for industrial hydraulic system maintenance and replacement.Strict oil cleanliness control is required in service.