MOOG B96839-001 Servo Valve Nozzle Flapper Assembly

Technical Specifications

Model:B96839-001

Brand:MOOG

Product type:Servo Valve Nozzle Flapper Assembly

Structure:Precision machined metal nozzle & flapper assembly

Nozzle clearance:Micron-level tolerance

Working medium:Mineral hydraulic oil,phosphate ester fire-resistant oil

Dimension:28mm*18mm

Weight:0.04kg

Operating temperature:-20℃ ~ +120℃

Storage temperature:-40℃ ~ +130℃

Relative humidity:10~90% non-condensing

Certification:CE

System compatibility

B96839-001 is MOOG precision pilot stage assembly.It fits MOOG D633/D661 series two-stage servo valves,widely used in steam turbine DEH system,fatigue test bench and precision hydraulic servo system.It is core spare part for servo valve overhaul.

Function

B96839-001 is the hydraulic pre-amplification unit of two-stage servo valve.The flapper deflection changes differential pressure between two nozzles,controls the main spool movement and adjusts output hydraulic flow.

Installation

Install nozzle flapper assembly inside servo valve pilot cavity,align gap with torque motor armature.Fasten mounting screws and perform gap adjustment and zero calibration after assembly.Take anti-static protection during handling.

Interface

‑Precision nozzle orifice and flapper structure

‑Component laser marking label

Feature

MOOG micron precision nozzle flapper assembly.Typical faults:orifice clogging,flapper bending,surface wear.Inspect nozzle and flapper surface during overhaul.

Diagnostic

Fault phenomenon:servo valve zero drift,poor linearity,slow dynamic response.Check nozzle blockage and flapper deformation,replace assembly.

Product Brief

B96839-001 is MOOG servo valve pilot stage nozzle flapper assembly.It is critical precision component of two-stage electro-hydraulic servo valve for industrial hydraulic servo system overhaul and replacement.