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About: Cask breather     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : owl:Thing, within Data Space : dbpedia.org:8891 associated with source document(s)

A cask breather (sometimes called a cask aspirator) is a type of demand valve used to serve draught beer. The cask breather enables the empty space created when beer is drawn from a beer cask to be filled with carbon dioxide from an external source. This prevents ambient air from being drawn into the cask, thus extending the life of the beer by preventing oxidation.