White Paper – The Basics of High Velocity Oil Flushing

By John Bonner, Director of Field Services, Oil Filtration Systems


High Velocity Oil Flushing (HVOF) is performed to remove contaminants from the piping and tubing of critical hydraulic and lube oil systems.

It is an essential maintenance process that is designed to extend the life of rotating equipment, keeping turbines, compressors, engines, etc. operating at their optimal level, and improving their overall reliability.

Contaminants can and will enter hydraulic and lube oil piping in many different ways during construction, commissioning, repairs/maintenance, and when failure events occur.  These contaminants range from pipe scale, welding slag, metal shavings, dirt, dust, water, rags, etc.  If left within the piping or tubing circuits prior to start-up, these contaminants can compromise the potential lifetime of critical hydraulic and rotating equipment from the outset – no matter how clean the oil in the reservoir is maintained.


The commissioning process of newly installed or repaired rotating equipment should include “polishing” the hydraulic or lube oil (filtering it to achieve the OEM specified cleanliness level), along with High Velocity Oil Flushing to remove harmful contaminants from the piping and/or tubing itself.


By performing a High Velocity Oil Flush at the appropriate time, reliability professionals can keep their long-term maintenance costs down, while extending the useable life of critical hydraulic and rotating equipment.







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