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Old 10-17-2011, 07:41 PM   #4
bobofthenorth
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City: Cowichan Bay, BC
Vessel Name: Gray Hawk
Vessel Model: Defever 43 Offshore Cruiser
Join Date: Oct 2009
Posts: 570
RE: Fuel valving schematic or picture.

Mine is poorly laid out and I can't find a picture of it anyway but what you want in effect is a withdrawal manifold that can select either or both tanks as its source and then direct the flow to either or both engines (and the gennie if applicable). On the return side you want exactly the same manifold so that you can return to either or both tanks from any source. Some systems are more intuitively laid out than others - its hard to imagine a less intuitive layout than what we bought but it has all the features so it works and it will likely be exactly the same whenever we sell the boat. If you want to add a polishing system then it just crosses between the two manifolds.
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