Diesel Filter - Water Trap - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 9 (permalink) Old 11-02-2010, 12:18 PM Thread Starter
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Diesel Filter - Water Trap

I am searching for a diesel filter with a water trap. But the water must self drain. The usage is for trucks and earthmoving equipment in Africa where there are no mechanics available. The fuel is also high in sulphur and easily contaminated. My aim is prevention of pump and injector damage.
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post #2 of 9 (permalink) Old 11-02-2010, 12:29 PM
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you need to be more specific, what make model & year do you need this filter for ?

Ive never seen an automatic drain, fuel / water separating filter...when draining
these filters you need to be able to catch the drained fluid.

some filters have a built in drain (to drain off the water), if your fuel is DIRTY
youll need to change the filters more often.

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post #3 of 9 (permalink) Old 11-02-2010, 12:39 PM Thread Starter
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The filter is for universal heavy duty applications. The problem in Africa is once the truck sets off there will be no service until it returns. The truck can end up crossing 3 or 4 borders into other countries. If the fuel system breaks down that is where it stands for several days before a mechanic can attend to it. So I am looking for a solution where the truck can travel 5000 miles in harsh conditions and self drain any water that accumulates in the water trap. Another container or device can be used to capture the water and diesel mix as it drains. The drivers have no ability to drain water traps manually despite training.
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post #4 of 9 (permalink) Old 11-02-2010, 12:49 PM
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I have never seen a fuel/water seperator that self drains.

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post #5 of 9 (permalink) Old 11-02-2010, 12:54 PM Thread Starter
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I was at Scania Trucks and they had run a test on a self draining filter. It worked but had to hang lower then the tank. It was not practical in this market so never implemented. The problem is the guy who invented it cant be traced as that was a couple of years ago.

I am thinking of developing a secondary device with a water sensor that pumps fresh diesel into the water trap and displaces the water causing it to drain out. This would work better when the vehicle is stationery prior to start up or after shut down.
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post #6 of 9 (permalink) Old 12-28-2010, 08:14 PM
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The only fuel/water separator that even comes close is the Dahl ( Baldwin ). It is advertised to capture 100% water from the fuel. You can view it in the clear sump bowl or have a water sensor light up to tell you. To drain is just a valve at the bottom of the bowl. The filters come in different micron ratings too....2...10...30.

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post #7 of 9 (permalink) Old 12-28-2010, 08:33 PM
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The baldwin ones with the clear bottom are the best that i've used. Never heard of an automatic draining filter.

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post #8 of 9 (permalink) Old 12-29-2010, 01:06 AM
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Davco has a site with a video that shows how the system works I believe they make the filter housings for Fleetguard, Dahl, everybody that use the system with the bowel on the top. It is the very best system by far. If you Google Davco 233 it will give you the video, and all the selections.

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post #9 of 9 (permalink) Old 12-30-2010, 05:38 AM Thread Starter
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I have discovered that automatic drains filters did exist but the water and diesel mix was dumped onto the road causing pollution. Therefore further development by filter manufactures was stopped. I have seen the Dahl filter from Baldwins and guess it may be the best option.
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