Why are there drips of water at the end of the “Vacuum Valve” water bottle drinking tube?
This little drip is the first release of water and is created as your water bottle forms a new vacuum seal. In order for a vacuum to form within the sealed water bottle, the air space and water volume need to equalize. This little release of water is the after effect of this equalization as the pressure stabilizes, and is perfectly normal. A single droplet at the end of the drinking tube is not a sign of a leaking water bottle. To help the vacuum-seal establish when the water bottle is first filled and mounted, tap the ball bearing several times with your fingertip. This releases small amounts of water and speeds up the equalization of the vacuum pressure.
