what if the header tank has two vent lines, what can you do to the 3rd to make it work?
ORIGINAL: BarracudaHockey
Its a bubble trap, in case the clunk in the main tank comes out of the fuel during violent flying, we use them on helicopters all the time.
It goes, muffler pressure line to main fuel tank. Main fuel tank clunk line to header tank pressure nipple (at the top of the tank) then a clunk in the header tank feeds the engine.