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I have full flow filters on all my equipment. Aren’t full flow filters adequate for keeping oil clean?

April 26, 2017adequate clean equipment filters flow keeping Oil

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I have full flow filters on all my equipment. Aren’t full flow filters adequate for keeping oil clean?

1 Answer

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Full flow filters do what they are designed to do, which is to remove solids in the 15-25 micron range. They are not designed to remove particles in the so-called wear range (the 5-15 micron clearances found in bearings, pumps and valves), nor do they remove moisture or varnish compounds which form in oil. Over the life of the equipment (even well maintained equipment) varnishes and sludge can form on parts and clog valves, seals, pumps and fluid passages.