George Lendich wrote:

Remembering that I have NO experience in this particular area; and there has
been great discussion on fuel return and the possibility of pumping fuel
overboard, I was thinking in my own mind why doesn't someone use a float
type cut-off valve, you know when a tank is full, the float is up and the
valve is off and it's automatic- would this not work ? I can't see how it
wouldn't.

George (down under)

The only problem I can see with that is fuel expansion in the hot
sun. Might over stress the wing tanks if the floats seal off the
vent line.

BTW the return flow back to the tanks could be tested with two five
gallon  cans with inlet fittings on the bottom and a tee in the water 
hose. Most parts for this test rig can be bought in the hardware
store. The water flow from the tap could be adjusted to about 20 gallons an
hour. The question is; will the two cans equalize levels faster than
20 gallons an hour can overflow one of them? Water hose is about the right
ID for cross connect tubes. Obviously there will be some rate of return 
flow where the cans will equalize levels. This too will be a function
of the ID of the cross connect tube.



Paul Lamar
 
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