Flushing in Hydraulic Systems: What is Flushing and Why is it Critical?
Flushing in Hydraulic Systems: What is Flushing and Why is it Critical?
What is Flushing? — The Clean Heartbeat of Hydraulic Systems
Flushing isthe process of cleaning microscopic particles such as dirt, metal shavings, production residues and old oil accumulated in pipes, components and circuits in hydraulic systems with a high flow rate of oil. This process creates turbulent flow in the system, breaking off the particles and making them filterable. (hidroman.com.tr)
In this way, the system; It works longer, Control valves give more precise performance, Filter life is extended, The risk of failure is seriously reduced. (hidroman.com.tr)
In short, flushing keeps the heart of hydraulic oil clean — when neglected, every valve and pump reports it back as a "failure." (hidroman.com.tr)
Why Flushing?
The flushing process serves the following important purposes in hydraulic systems:
Removes deposits after installation and maintenance
Achieves ISO cleanliness standards by ensuring contaminants are removed
Supports reliable and uninterrupted operation of the system
Optimizes filter replacement times and reduces maintenance costs
Not flushing in every system can lead to a decrease in system performance as microscopic particles damage hydraulic elements. (hidroman.com.tr)
Flushing Process Step by Step
Preparation
The system is connected from the outside with a flushing unit.
A temporary circuit is established by bypassing.
The target ISO cleanliness level is set (ör. ISO 4406). (hidroman.com.tr)
High Flow Rate Circulation
Hydraulic oil is supplied to the system with low viscosity.
The flow is made turbulent, whereby contaminants are removed from the lines.
This flow transforms from laminar to turbulent, ensuring maximum cleaning effectiveness. (hidroman.com.tr)
Filtration and Measurement
The oil is constantly filtered.
The level of cleanliness is checked by taking samples.
The process continues until ISO cleaning reaches the targeted level. (hidroman.com.tr)
Termination and Validation
Flushing is stopped when the targeted level of cleanliness is achieved.
System components are safely commissioned.
Reporting is done and disassembly-assembly steps, if any, are completed. (hidroman.com.tr)
Things to Consider When Flushing
The fact that the oil used is the same as the oil to be used in the system does not create incompatibility in the future. (hidroman.com.tr)The temperature of the oil affects viscosity → should be kept within the ideal range (e.g. 60 °C). (hidroman.com.tr) The filter micronage must be selected correctly (below 10 μm). (hidroman.com.tr) Process control should be done with continuous cleanliness measurement. (hidroman.com.tr)
The Hidroman Difference: Professional Flushing Services
At Hidroman, flushing is not just a procedure —it's a commitment that maximizes the confidence and performance of your system.Our solutions:
Mobile flushing unitsISO 4406 cleaning analysesCertified field teamsDetailed cleaning strategies with reportable results
Every system is different and as Hidroman, we achieve maximum efficiency with customized flushing plans.