![]() The pressure differential will increase and the filter will appear clogged.įibreglass is a type of synthetic filter media. They can be used to remove water from the system, however if this is not the desired effect and there is water in the system, the filter element will still absorb water. Cellulose also absorbs water, which may or may not be a benefit. The downside of this type of media is that it is not very efficient nor do they have a high dirt holding capacity. The “paper” used for cellulose filters isn’t much more sophisticated than the paper used for writing. However, they have an advantage of being the only common type of filter element you can clean and then reuse.Ĭellulose filters are made from wood pulp. Because of the limitations in wire size and construction techniques, they are not available in very fine micron ratings. Wire mesh filters are constructed of either standard or stainless steel in a woven mesh. The most common media include wire mesh, cellulose, fibreglass composites or other synthetic materials. This is done to increase contaminant carrying capacity and to reduce pressure differential across the filter. ![]() Whatever media is used, it usually starts out in sheet form and is then folded or pleated to expose more surface area to oil flow. However, a basic understanding of the terms and various rating systems can give the operator of hydraulic equipment the ability to purchase wisely.įilter media is the actual material used to capture the contaminant in a filter element. Unscrupulous sellers of filters have been known to use the perceived complexity in the specifications of filters to misrepresent their products to ignorant buyers. Part 4: Understanding oil filter specifications and ratings.
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