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Diesel filtration option?
Filtration seqential ''trains'' are composed of a prefilter(s) + final filter. The prefilter is typically sized at 5X the micrometer retention size of the final filter and usually (not always) is the same surface area of the final filter. If the situation of the tankage is such that the pre and final filters plug rapidly you can add an additional prefilter of larger retention. This configuration will vastly increase the service life of the final filter as the prefilter has some capacity of retention rating of the final filter. The PRIME job of the prefilter is to extend life of the final filter. If you choose to use just a final filter, I''d recommend that you increase the surface area (& cost) by a factor of 5X or more.
Filtration is a three dimensional event so besides surface area (velocity of the fluid as it enters the ''pores'' ) one must consider the velocity of the fluid ''through the pores''. The internal velocity will establish how DEEP into the filtration structure before plugging occurs. If you want a long life filter, you must slow down the velocities so that the dirt is captured near the surface and not deep into the structure. A prefilter greatly enhances the life of the final filter because it removes much of the debris before it reaches the final stage... and the final stage can be run at greater velocity and with lower relative surface area.
If you''re looking for ultimate efficiency and cost savings, consider to put in an independent pumped recirculation loop (from the tank and right back to the tank) : transfer pump, 15-20µM prefilter, gages, etc. continually run the system when your engine is on - then youll only need a single 2µM before the injector pump and will rarely have to ever change it. The 15-20µM recirc prefilter will after a few total ''tank turnovers'' accomplish particle levels in-the-tank down to submicronic levels. Then, the final filter before the injection pump becomes just a "guard filter" and is rarely ever challenged with particles; all particulate removal work is done by the (much much cheaper) larger retention recirculation prefilter.
So to answer your question..... Definitely DONT just use a single final filter in the system, unless you put in a VERY LARGE surface area (costly) filter! Final filters are very expensive in comparison to larger retention filters. If you use a single stage filter, expect to replace it VERY often.