Valves are used for flow, release or dosage of fluids, while a wine tap is used to pour fluids into bottles and glasses.

2. Why are ball valves for fermentation with a third hole and a release more efficient?

The main advantage of these valves is that they can be cleaned without having any fluid of impurity left in the valve. They are effective with fermentation and when using different containers which contain different varieties of wine.

3. Does the butterfly valve have the same use as the ball valve for fermentation with a third hole and a release?

Yes, since both valves guarantee a clean inside of the valve.