Description

Spunding (sometimes called bunging) is the process of trapping the naturally occurring CO₂ that is created during the fermentation process.  It is absorbed into the wort as it turns into beer.  The spunding valve maintains a set pressure in the fermenter to naturally carbonate your beer, working in a similar fashion to a pressure relief valve.  The pressure gauge indicates how much pressure is in the vessel.  The clear cup can be filled with sanitizer or water to maintain a sanitary environment during fermentation.  The end result is a perfectly carbonated beer.