Cask Breather (Autovent) can be used either in vertical or laydown dispense. The Autovent replaces both the Soft and Hard Pegs it is made from a high impact resistent food grade material it contains a (duck bill) Non Return Valve which controls the amount of air entering the cask the only way air can enter the cask is by dispensing beer. Because it has an air tight seal it can add a couple of days onto the longjevity of the beer.
