Originally Posted by brian12566
Question...those PVC ball valves...the ladies in the pic would each turn their own ball valve..so the beer flow would start at all different times right? or am I missing something? I am curious because I sooooo want to build one of these.
Probably, but that is also an unorthodox-looking beerbong (that seems like an oxymoron...).
The way most beerbongs are made is with a funnel at the top for adding beer, and the tube is held above the liquid level of the funnel so that atmospheric pressure doesn't allow it to flow. When you're ready to drink, you lower the tube below liquid line and the beer flows quickly due to gravity.
They way this one works, however, is each tube is closed via the ball valve, and each tube is filled with beer. When you open the ball valve on your particular tube, the beer flows (again, due to gravity). Everyone can either go all at once, or one at time, but it looks like each tube is already filled with beer, so really you're not affecting the person next to you.
Both methods are aided by the fact that the top of the beerbong is open to air, which allows the beer to flow without needing to vent displaced air, which would ordinarily create an air bubble in a closed container (think when you're drinking beer from a longneck bottle, or when you pour out a gallon of milk). This allows you to drink a pint of beer in under a second.
So, I just made an engineer's answer to how to drink beer faster...