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Gas Tank Pressure Equalization Hose
- Thread starter Bill Blue
- Start date
Barry
Diamond Level Sponsor
I don't see any reason why plumbing the return line into the "pressure equalization hose" would not work. It is not good practice to return fuel through vent lines, but the "wing tank pressure equalization hose" in Series 3/IV/V Alpines is not vented and any difference in return flow to the wing tanks would be balanced out by the large diameter "crossover pipe".
The "pressure equalization hose" (as well as the supply and return hoses) should be SAE J30-R9 (aka, "fuel injection hose") fuel hose which is resistant to ethanol, has low permeability to prevent gasoline smell and is reinforced to handle up to 100 PSI.
There is the possibility of pressure in the fuel return lines, so all hose to metal tube connections should be properly clamped.
The "pressure equalization hose" (as well as the supply and return hoses) should be SAE J30-R9 (aka, "fuel injection hose") fuel hose which is resistant to ethanol, has low permeability to prevent gasoline smell and is reinforced to handle up to 100 PSI.
There is the possibility of pressure in the fuel return lines, so all hose to metal tube connections should be properly clamped.
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Barry
Diamond Level Sponsor
I thought about it overnight and decided that additional comments are needed.
My preference would be a separate return line fitting into one of the wing tanks, but that typically means welding or soldering on a tank that may have already been cleaned / sealed.
Something like this might be a way to have a separate return line without welding or soldering.
I still don't see any reason why plumbing the return line into the "pressure equalization hose" would not work.
My preference would be a separate return line fitting into one of the wing tanks, but that typically means welding or soldering on a tank that may have already been cleaned / sealed.
Something like this might be a way to have a separate return line without welding or soldering.
I still don't see any reason why plumbing the return line into the "pressure equalization hose" would not work.
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