I am looking for a suitable fuel valve for a EFI setup in a high wing plane (Bearhawk), and a IO-540. Its a dual tank, gravity fed system, and the designer highly recommends running the fuel valve in "both" for TO or Landing. I am having a hard time finding a suitable valve. The Andair valve that is sized right does not have a "both" setting. The Newton valve has one, but the returns are only 1/4", which I think is a little small for this application. At idle engine power, the electric pump would be pumping 23-24 gph through a 1/4" return line. Is the Newton valve adequate?
Groco makes one,FV-65038-A, that has 1/2" feed and 3/8" return lines. The price is right, but it weights 3 lbs. 3 lbs is less than a header tank, which I am trying to avoid if I can.
The stock fuel system works great in "both". The two tanks have a for and aft feed line, so in "both" you should have fuel feed no matter what angle of bank or nose up or nose down.
Groco makes one,FV-65038-A, that has 1/2" feed and 3/8" return lines. The price is right, but it weights 3 lbs. 3 lbs is less than a header tank, which I am trying to avoid if I can.
The stock fuel system works great in "both". The two tanks have a for and aft feed line, so in "both" you should have fuel feed no matter what angle of bank or nose up or nose down.