Gordon,

It will work in the orientation that Pete has it installed, but you know that I always suggest reading the instructions. When all else fails..........
Mounting it fore and aft will make the supply line bend radius much larger.
My suggestion is to follow Gordon's advice, and open up the bend radius.

Some "UAT clones" are using Festo "push to install" instant fittings, but if the tubing bend radius is too short, as Gordon has suggested, the Festo can leak, sucking air into the system. The UAT is on the "suction side" of the fuel system, so usually a leak will be manifested as a stream of bubbles instead of a fuel leak or dribble.

I had that same problem on my first turbine where a Festo 6mm ball valve was installed between the header tank and the pump. The bend radius was too small, and caused an air leak into the end of the ball valve. The air leak showed up as a small stream of bubbles starting at the leaky fitting and going to the pump inlet.


Also, the use of a threaded fastener to plug the UAT fill tube can cause air to leak around the threads and into the UAT, depleting the UAT of fuel. I have seen this happen, causing a flameout, which almost resulted in a dead stick landing. Four ounces of fuel doesn't go very far.
The supplied aluminum plug works fine, but I usually use a Festo one way check valve, or a Festo ball valve to cap the fill line which simplifies refuelling.