one-way wine airlock beer brewing fermentation check valve plastic air lock water seal home winemaking exhaust valve fermenter

product type : airlocks material : plastic size : 17cm in length and 10mm in diameter brew syphon hose size : length about 2m model number : mt3309 use : wine making,beer brewing feature1 : seal for fermentation feature2 : reusable,one-way,water sealed barware brew wine fermentation : exhaust check valve wine beer making : water sealed valves