- Jul 10, 2010
- 1,469
- 47
- 191
You would not want these to release air from the cup. That is part of what makes the cup so good, it has a tight fit at the water point so water only flows one way, keeping that green nasty growth from getting into the system like you get with hanging waterers. It would allow you to attach to bottles wihtout an issue but that is easily solved with the air release in the bottle.