Which one? I have a one way valve that I use on the bike, as the piping is smaller for the 8mm bleed nipples.
I have a vacuum bleed kit too, trouble with those is they can actually suck air round the threads of the nipple, still end up with the press the pedal and tighten the bleed while the pedal is down.
I Also have an eezi-bleed which is okay on the LR, as long as you don't put too much pressure behind it. And fer gawds sake make sure it's sealed on the master reservoir, cos damn it makes a fechin mess if it isn't! Paint stripper!