Join Date: Jan 2003
Location: Maine Coast
Thanked 287 Times in 220 Posts
Rep Power: 17
Re: Racor Diesel fuel filter 500MA2
I've got one going in my own boat to do some testing on. In 40 years of owning boats though neither myself or my family have ever once found any water in our tanks. I change my deck fill o-rings about three times per season....
IMHO most water in tanks comes from the vent leaking or the deck fill leaking...
I once installed a tank clean out port on a customers Cape Dory. She had her deck scuppers clog over the winter and before I even had a chance to put fuel in the now clean and empty tank, the tank it was 2" full of water even under the winter cover....
Empty tanks don't magically fill with water, if they did we would not need water wells... I replaced her o-ring, (it was completely missing) drained the tank and all was fixed...
Keep in mind that the "dehumidifier" is only part of your cost. You'll need a Racor LG100 or similar ahead of it in the vent line to protect it from "burping" fuel up the vent line and into the dehumidifier..... The LG100 runs about $110.00.....
-Maine Sail / CS-36T
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