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Water in hydraulic, lubrication, power transmission and insulating fluids adversely effects fluid performance and is a threat to system reliability, oil purification measures need to implemented, vacuum dehydration is one method that does alter the properties of the oil.
This often invisible contamination promotes oil oxidation, the formation of acids, bacterial growth, and can lead to a reduction in lube film thickness. In time, this results in corrosion, increased wear and expensive system failure.

When free water contamination interacts with system fluids the consequences are increased operating costs from reduced oil life and increased fluid replacement and disposal costs.

The ‘Pall’ HNP022 Series Oil purifier is designed for use with small to medium oil systems, particularly where high viscosity fluids are employed, and can effectively remove 70 liters of water per day from the oil*.

The Pall HNP fluid conditioning purifier uses vacuum dehydration to remove 100 % free water and as much as 80 % of dissolved water. It will also remove 100 % of free and entrained gases and up to 80 % dissolved gases.

Oil Purification Method
Vacuum dehydration is the most effective method of oil purification, at minimum cost and ease of use. Unlike other methods it removes both free and dissolved water and cannot burn or otherwise significantly alter the properties of the oil.
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