So JR19 and I did my seastar teleflex system in about 30 minutes, maybe 45. Got all the air out of the closed system and didn't spill a drop. The bubble purge system works great and I could see that no air was left in the system. You can see the air moving through the system via the clear tubes and gravity does come into play but the turning of the wheel is pushing the fluid through the system. So you are not waiting on gravity to work its magic. As you turn the wheel fluid moves through the system and the high point (vent) is at the fill point where air will escape.
I have bled breaks in automotive applications and hydraulic systems in pumps and calibration systems in the past. The bubble purge system was easy, quick and clean.
Gene, thanks again for sharing the kit (and fluid) you purchased.