High Velocity Oil Flushing

High Velocity Oil Flushing

tech holding oil flushing screen
100 mesh stainless oil flushing screens are used to track progress as well as verify cleanliness upon completion of a typical high velocity oil flushing project.

TurnKey™ Oil Flushing Services

High Velocity Oil Flushing is used to remove harmful contamination and debris from the internal surfaces of lube oil piping, High Velocity Oil Flushing (HVOF)  is used because of the turbulence created by the HVOF process. Turbulent Flow, as opposed to laminar flow, is defined as having a Reynolds Number greater than 4000. For more information, try our Online Reynolds Calculator. 


IFM provides TurnkeyHigh Velocity Oil Flushing Services and utilizes the following equipment and tactics to thoroughly remove all contamination from lube oil piping systems prior to startup:

  • 50-2000 GPM Flushing Skids
  • High Capacity Oil Heaters (Thermal Cycling)
  • Pipe Vibration
  • Reverse Flow Manifolds
  • Compressed Dry Air or Nitrogen (Sparging)
  • 100-Mesh Flushing Screens
  • Chemical Cleaning Agents (If Needed)

Types of Systems we Flush

  • Steam Turbines
  • Gas Turbines
  • Aero-Derivative Gas Turbines
  • Rotary Screw Compressors
  • Reciprocating Compressors
  • Hydraulic Systems
  • Stationary Engines
  • Seal Support Systems
  • MRC Compressors
  • Refrigeration Compressors

Industries we Specialize in

  • LNG
  • Petrochemical & Refining
  • Power Generation
  • Oil & Gas
  • Steel
  • Chemical Manufacturing

Lubrication Knowledge presented in Partnership with the Noria Corporation

When is an Oil Flush Required?

Reasons for a High Velocity Oil Flush

Before starting up a turbine, compressor or hydraulic system, it is important to remove all traces of metal and other hard contaminants left behind during the fabrication and installation process of the lube oil piping. If not removed using a high velocity oil flush, these hard particles can destroy your equipment. 

As part of a lubrication best practice, it is important to routinely perform a high velocity oil flushing service on critical pieces of equipment. A rule of thumb would be every five years on critical systems and every ten years on non-critical systems.

As part of a lubrication best practice, it is important to routinely perform a high velocity oil flushing service on critical pieces of equipment. A rule of thumb would be every five years on critical systems and every ten years on non-critical systems.

When converting to a different lubricating oil, it is sometimes important to use a high velocity oil flush in order to remove all traces of the old oil left behind in the piping. This prevents any non-compatibility issues. A sacrificial charge of the new oil is typically used to remove all residue from the previous product to ensure that the new oil performs as designed.

This flow chart can help you determine when a drain and fill procedure is needed or when the situation calls for a complete oil flush. This chart does not apply to new systems which should always be flushed prior to startup. For more information like this download our High Velocity Oil Flushing Guide

Our Process

The diagram shows how IFM’s HVOF equipment is connected to an existing oil system, including jumpers to protect bearings and other equipment from damage. 

Our Mechanical Engineers will work with the project team to design the most effective flow path ensuring no part of the unit is left uncleaned. A properly sized flushing unit will be selected to maximize the efficiency and effectiveness of the project as well as exceed any required Reynolds Number.

All necessary piping, fittings, and spool pieces will be removed prior to the installation of all flushing equipment. All critical components not being flushing will be removed, mechanically cleaned, bagged, and tagged until reinstatement..

Prior to beginning the circulation phases of the project, IFM technicians and customer representatives will conduct a visual inspection of the entire project. This will ensure that the entire circuit is leak free and that the system is ready to safely flush. 

IFM technicians will perform a HVOF on the system piping. Depending on the customer and/or OEM’s procedures and specifications, the following techniques may be used to dislodge debris and contaminants from the walls of the piping:

• Heat/Cool Cycles
• Active Purging Strategy
• Mechanically Knocking Piping
• Reverse Flow Manifolds

These techniques along with IFM’s proprietary flushing technologies will be utilized to free all debris from the piping. All flushing tactics will be agreed upon in writing through the process and procedure prior to the start of any flushing.

A confined-space entry (if necessary) is performed in order to thoroughly clean the inside of the console. At this time, wet-vacs, squeegees, scrapers, and lint-free rags are used to remove contaminants from the inside of the reservoir. The reservoir including gaskets and suction strainers are inspected for potential signs of ingression or leakage. IFM takes before and after photos that are included in the customer’s post job report.

Learn more about our Reservoir Cleaning Services

The ISO 4406 or NAS 1638 cleanliness requirement will be established by either the customer or OEM during the planning phase of the project. Typically the inspection test will consist of the following verification methods:
• Pipe Cleanliness – Visual inspection of mesh screens – No visible ferrous or gritty particles
• Oil Cleanliness – 16/14/12 ISO 4406 verified by patch test

The site POC will receive nightly emails including project status, pictures, daily goals, and budgetary updates. This will be included in a comprehensive post-job report which will be available within 30 days of the completion of the project.

TurnKey™ Oil Flushing Project Packages

  • Process and Procedures in accordance with API 614 and major OEM oil flushing standards
  • Reliable Quality Flushing Equipment
  • Excellent Contractor-Client Communications
  • All-Inclusive Package with Final Fill Oils
  • Honest and Accurate Bidding
  • Safe, Professional, and Experienced Crews
  • Nightly Job Progress Updates
  • Detailed Post Job Reporting
oil flushing skid with heater built in

Our Customers

Here are a few clients that have trusted IFM with their high velocity oil flushing and lubrication services needs.


Get started on your next oil flushing project with IFM.

Call Us

800-256-1250 – Toll Free

832-781-0610 – Direct

985-447-3811 – HQ


Find Us
1201 St. Patrick Hwy Thibodaux, LA 70301  

8:00-5:00pm CST

Operations – 24/7