The Importance of Hydraulic Flushing: Features and Benefits

Posted by Randy Hydrick on Dec 22nd 2023

The Importance of Hydraulic Flushing: Features and Benefits

Hydraulic systems serve as the backbone of numerous industrial operations, their efficiency and reliability pivotal to the overall machinery performance. Among the crucial maintenance procedures for these systems, hydraulic flushing stands out as a key process ensuring cleanliness and optimal functionality.

What is Hydraulic Flushing?

Hydraulic flushing is a meticulous cleaning procedure performed on a hydraulic system to eliminate contaminants such as dirt, debris, or foreign materials that may accumulate over time. This process entails circulating a cleaning fluid through the system at high velocities to dislodge and remove any unwanted substances.

Features of Hydraulic Flushing

  1. Thorough Cleaning: Hydraulic flushing provides a comprehensive cleaning of the system, reaching even the most inaccessible areas.
  2. Use of Lower Viscosity Fluid: Typically involving the use of a lower viscosity fluid, this process mirrors the fluid to be used in the system.
  3. Temperature Cycling: Utilizing heat exchangers and coolers during flushing helps dislodge crusty surface deposits by changing the temperature.
  4. Pulsating Flow: Rapidly changing flow rates through pulsation help dislodge contaminants from nooks and crannies.

Benefits of Hydraulic Flushing

  1. Improved System Performance: By removing contaminants, hydraulic flushing enhances the performance and efficiency of the hydraulic system.
  2. Extended Component Life: Regular flushing extends the life of hydraulic components by reducing wear and tear caused by contaminants.
  3. Reduced Downtime: Preventing system failures and breakdowns caused by contamination, hydraulic flushing reduces downtime and increases productivity.
  4. Cost Savings: Despite upfront costs, the long-term savings in reduced maintenance and replacement costs make hydraulic flushing a worthwhile investment.


Hydraulic flushing is an indispensable maintenance procedure that significantly enhances the performance and lifespan of your hydraulic system. View it as a small investment with substantial returns in the long run. Don't wait until encountering a system failure – it's recommended to flush annually. This procedure, when coupled with dehydration and oil testing (see dehydration blog), ensures a clean system with clean, dry oil upon restart. Be proactive and schedule a hydraulic flushing service today to optimize your system's efficiency and longevity. Your machinery will thank you.

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