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EHC System Flushing

EHC System Flushing

Electrohydraulic control (EHC) systems demand an exceptionally high level of fluid cleanliness to function reliably — the servo valves, actuators, and precision control components that govern turbine operation have tolerances measured in microns, leaving them highly vulnerable to particulate contamination and fluid degradation. Phosphate ester fluids used in EHC systems are also prone to acid number increase, moisture ingression, and varnish formation over time, compounding the risk. EHC system flushing removes contaminated fluid, dislodges deposits, and restores cleanliness to manufacturer-specified levels, protecting critical turbine control functions and reducing the risk of unplanned outages in power generation and industrial turbine applications.

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  • Electrohydraulic Control (EHC) System Flushing for Turbine and Power Generation Applications

  • Removes Particulate Contamination, Varnish, and Degraded Phosphate Ester Fluid

  • High-Velocity Flushing Achieves Target Cleanliness Levels per ISO 4406 and NAS 1638 Standards

  • Turbulent Flow Rates Ensure Complete System Coverage — Headers, Actuators, and Return Lines

  • Compatible with Fyrquel, Skydrol, and All Major Phosphate Ester Fluid Types

  • Fluid Analysis and Particle Counting Performed Throughout the Process

  • Mechanical Full-Flow Filtration with High-Efficiency Filter Elements

  • Acid Number, Moisture, and Fluid Condition Monitoring Included

  • New Fluid Charge Coordination and Proper Fluid Disposal Available

  • Temporary Flushing Skid and Support Equipment Provided On-Site

  • Minimizes Risk of Servo Valve and Actuator Damage from Particulate Ingestion

  • Often Performed in Conjunction with Tank Decontamination and Fluid Purification Programs

  • Full Cleanliness Verification Documentation and Completion Report Provided

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