Watch the movie clip.
I turn the pump on, the hose jerks  and the fuel rises
in the line. The pump is located seven feet
above the can of paint thinner. That is with an open
injector. With a closed injector it takes just a second
or so longer. I double checked the current consumption
and it is exactly 3 amps at exactly 12 volts.
You are not going to beat this roller vane pump.

Dave Leonard is right about the return system.
I think it is the best for aircraft. It will
purge water, air and will start when hot.
I think the main driver for the non return
systems in cars is lower cost and evaporator
controls. Not a factor in an aircraft.

Paul Lamar