Thank you for the responce. . A few observations/questions. .
The Titanium Series water separator WS-2001 (Fleetguards # FS19768) and the HD Series' water separator WS-1001 (Fleetguards # FS1023) is a 140 micron stainless/steel serviceable wire mesh. These two elements are made of the exact same material; the only difference is that one has more material than the other. The FS19768 has a water separation efficiency rating of 50% per pass which was tested on 10-26-09, as to where the FS1023 has a 0% efficiency rating tested on 8-10-07. This type of media has water separating capability as they were also used for Caterpillar's A, B and C model mechanical engines in heavy duty equipment.
Fleetguard rates the FS19768 at 140um at 100%, and the FS1023 at 100um at 100%. Per Fleetguard the media is different, the FS19768 uses water striping media, the FS1023 does not. The FS1023 is only a wire mesh screen. The FS19768 is a water stripper; the FS1023 is not, it was never designed to remove water just to keep chunks out of the pumps. The drain is only there to remove sediment, if you get water separated from gravity then great, but thats not the intent.
Remember they have a 50% rating per pass; this is one reason for the MASS Volume Return which the FASS incorporates. The majority of the fuel that passes through the FASS is polished and returned to the fuel tank to be polished again, now for the 2nd stage of water filtration.
Only the FS19768 has a 50% removal rating per pass, 0 x anything is still 0 for the FS1023.
Before the fuel exits back to the fuel tank or passes through to the engine the fuel must pass through the 3 or 10 micron Stratapore element found in our FF-1010 or FF-2003. This element has the same exact water separating capabilities as the very popular Fleetguard FS1000 at a 95% water separation capability. The only difference between the element found in the FF-2003, Titanium Series fuel filter, and the FS1000 is the micron rating. The FS1000 has a drain on the bottom as to where ours doesn't, we believe the bulk of the water will be captured in the water separator and remaining water will be captured in the fuel filter.
I am curious where you get the info stating that the FF5712 or HF6604 are water stripping filters? Per Fleetguard they are not, their media is for particulate removal, not water.
Water Separators:
Titanium Series:
1. FS19594 90%
2. P550550 90%
I don't have data on the Donaldson, but the FS19594 is only rated at 20 GPH.
I suggest you look into the Luberfiner LFF9594, the emulsified water sep is a little lower, but its rated for 90GPH. The FS19594 will fall well below the 90% rating when 20 GPH is exceeded.
One last question. What was the reasoning for using the hydraulic filters? They are rated on a multi-pass bases, and fuel filters are rated single pass. Most, but not all, filters that are rated multi-pass are not as efficient single pass, some decrease 2-4um. Since the HF6604 is 3um absolute multi-pass, and is not tested single pass, there is no way to know its efficiency on one pass (which is very possible for fuel/contaminates to only go thru the filter once before the injectors. )
Again, thank you for your time.