Just as important, when de-fueling the aircraft, remember to leave the UAT full of fuel. If drained, the membrane will dry out, requiring you to go through the saturation process all over again.
The BVM Ultimate Air Trap can also serve as the final filter upstream of the pump.

When re-fueling, please don't make the mistake of leaving the UAT fill line unplugged. If you have an air leak at the fill line plug, you will soon have a flame-out because the pump will pull all of the fuel from the UAT instead of from the main tank(s) and header.

I use a Festo 6mm one-way checkvalve instead of the plug that comes with the UAT. You could also use a Festo 6mm ball valve if so inclined. Turn it on to refuel, turn it off when full.

Regards,
Harley Condra
BVM REP