MOOG 072-1203-10 Two-stage Hydraulic Servo Valve

Technical Specifications

Model:072-1203-10

Brand:MOOG

Product type:Two-stage Force Feedback Hydraulic Servo Valve

Structure:Two-stage,force feedback,dry torque motor

Max working pressure:35MPa

Rated flow:75L/min

Rated control signal:±40mA

Coil resistance:80Ω±10% (20℃)

Working medium:Anti-fuel oil

Connector:Multi-pin aviation connector

Function:Precise hydraulic flow regulation,four-way spool control,turbine valve closed-loop control

Dimension:225mm130mm98mm

Weight:4.0kg

Operating temperature:-20℃ ~ +80℃

Storage temperature:-40℃ ~ +120℃

Relative humidity:10~90% non-condensing

Certification:CE

System compatibility

072-1203-10 belongs to MOOG 72 series servo valve.It is widely applied in steam turbine DEH control system for main valve and regulating valve control,also suitable for power plant hydraulic control system.It is spare part for legacy power hydraulic equipment overhaul.

Function

072-1203-10 is two-stage force feedback hydraulic servo valve.It adopts dry torque motor and double nozzle flapper pilot stage,with high resolution and low hysteresis.Converts electrical control signal into hydraulic flow output to realize accurate position closed-loop control of turbine valve.

Installation

Mount valve on hydraulic manifold,fasten mounting bolts to specified torque.Connect aviation signal connector and anti-fuel oil pipeline.Clean oil circuit strictly before commissioning,ensure oil cleanliness meets NAS1638 Class7.Take anti-pollution protection during handling.

Interface

‑Multi-pin aviation electrical connector

‑Hydraulic mounting port for anti-fuel oil

‑Valve identification label

Feature

MOOG 72 series power dedicated servo valve.Typical faults:oil contamination blockage,nozzle clogging,coil aging,internal oil leakage.Inspect oil cleanliness and coil resistance before replacement.

Diagnostic

Fault phenomenon:unstable flow,zero drift,slow response,internal leakage.Check anti-fuel oil cleanliness,electrical wiring,coil resistance and nozzle flapper assembly.

Product Brief

072-1203-10 is MOOG two-stage force feedback hydraulic servo valve,specially designed for steam turbine DEH control system,for high-precision hydraulic control and power plant equipment renovation.Mainly used for maintenance and replacement of turbine hydraulic control components.Anti-pollution and ESD protection must be followed during handling.