MOOG A67999-200 Servo Valve Button Filter Disc

Technical Specifications

Model:A67999-200

Brand:MOOG

Product type:Servo Valve Button Micro Filter Disc

Structure:Multi-layer stainless steel mesh,pleated filter media,electron beam welded

Filtration precision:10μm

Max working pressure:350bar

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

Dimension:OD 15.88mm

Weight:0.005kg

Operating temperature:-20℃ ~ +130℃

Storage temperature:-40℃ ~ +130℃

Relative humidity:10~90% non-condensing

Certification:CE

System compatibility

A67999-200 is MOOG dedicated pilot filter disc.It is mainly matched with MOOG D661 series servo valves,widely used in steam turbine DEH control system,fatigue test bench and precision hydraulic control system.It belongs to consumable spare part for servo valve overhaul.

Function

A67999-200 is circular button filter installed in servo valve pilot cavity.It traps larger solid particles in pilot hydraulic oil,protects nozzle-flapper assembly from blockage,stabilizes servo valve dynamic performance and extends service life.

Installation

Replace filter disc during servo valve overhaul,place into pilot cavity and assemble matching sealing parts.Avoid scratching filter mesh during assembly.Perform oil flushing after valve reassembly,keep clean to prevent secondary contamination.

Interface

‑Disc filter element,installed inside servo valve pilot stage

‑Filter identification marking

Feature

MOOG 10μm metal mesh button filter.Typical faults:mesh clogging,mesh deformation,metal fiber shedding.Inspect filter status during regular servo valve maintenance.

Diagnostic

Fault phenomenon:servo valve zero drift,slow dynamic response,nozzle blockage.Check filter contamination and replace filter disc timely.

Product Brief

A67999-200 is MOOG pilot stage button filter disc with multi-layer stainless mesh,suitable for D661 series servo valves.It is essential consumable for servo valve maintenance and overhaul.Strict oil cleanliness control is required in service.