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RichH
 
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Default fuel polishing help needed

I did a Google search and only turned up links back to Belgoes. I
have also searched under fuel polishing and fuel pumps without
success. I also was searching for GulfCoast filters and could not
find any link there either.

Contact Walbro, ask them for a local distributor.


At the West Marine site I found a Jabsco Vane Puppy pump that is
touted as a fuel transfer pump. At 5 gallons per minute that is 330
per hour whereas the KR12-40 was only 40 per hour. What do you think,
would the Vane Puppy be sucking fuel through the filters too fast for
effective polishing?

For recirculation filtration the FASTER the flow through the filter (not
lower retention rating) is BETTER.
Vane Puppy's impeller is not chemically compatible with fuel oil. Diesel
oil will make the vane swell on long term service - the vane will stall
and the motor will seize. Choose ONLY a pump that has a EPDM
(EthylenePropyleneDiamineMonomer) impeller and seals.


Any advice and sources for equipment for fuel polishing would be much
appreciated.

Gulf Coast Filters - ancient technology, crappy products.
Stay away from filters that use toilet paper and rolls of paper towels -
are snake oil. Toilet paper, etc. will digest in the presence of water
emulsion or free water. These filters will UNLOAD debris under
increasing operating differential pressure. The 'sealing' method for
toilet paper and paper towl rolls is by using a compression cup or knife
edge seal that 'bites' into the end of roll - these filters bypass
debris at the 'seal'. Sometimes they seal, sometimes they dont.

Try to find a 'industrial' filter company or distributor who will
supply a resin bonded cellulose 2.5" dia X 10 inch long filter cartridge
in either depth media ... or better - expanded surface area pleated
configuration. Choose a (documented) retention rating of at least 15-20
micrometers at least 80% removal efficiency. Reason1: the flow rate is
MUCH faster with LOWER operating pressure drop; result: tank turns over
FASTER (more efficient total removal .... that will approach in-the-tank
sub-micronic levels in relatively short time). Reason2: the retention is
consistant vs. increasing dirt load and differential pressure; there is
NO consistant removal rating on 'toilet paper' --- every damn paper
mill is 'different'. The deposition of debris on a toilet paper roll or
Hand towel roll is primarily on the surface .... and the surface area is
small in comparison to a pleated filter.



Lee Huddleston'
s/v Truelove