2 Pieces One-way Valve Wine Brewing Fermentation Plastic Air Lock Exhaust Valve Home Brew Barrel Tool

Description: This fermentation air exhaust valve can help to release the air inside a brewing barrel. You can use it to isolate air and makes the barrel interal environment fits for fermentation. It can release air smoothly and slowly the a one-way valve design makes the air won t flow back. Made of plastic it is not easy to break nor to crack is healthy non-toxic and convenient to be cleaned. The one-way exhaust valve is compact won t ta