ITEM NAME:3xTwin Bubbler Airlock for Home Brew Beer Wine Making S-Shape Air Lock New Descriptio n Description: Prevent back-flush into the fermentation chamber during ambient temperature changes in This airlock is typically used on fermenters up to 20 gallon Usage: Fill water into the exhaust valve, insert to the cover of the brew barrel or rubber plug on the top of the fermentation container, cover with the lid Function: Isolate the air from the wine/beer, discharge CO2, prevent flies flying into the wine/beer Application: pure juice fermentation, white wine fermentation, red wine secondary fermentation Can be used for home-brewed beer, wine, cider and other uses How to use: After sterilized adding water to the exhaust valve. After both sides of the exhaust valve's water in the parallel state, gently insert the brewing bucket lid. When wine was ferment generated bubbles, through the exhaust valve discharged to buckets outside. All the fermentation process is in normal temperature, automatic fermentation, exhaust, without manual control. Specifications: Material: Plastic Color: Transparent Lid color: Random Length: 170mm Lower outer diameter: 10mm Package Included: 3 x Twin Bubbler Airlock Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality buy, happy buyï ¼ 3xTwin Bubbler Airlock for Home Brew Beer Wine Making S-Shape Air Lock New.After both sides of the exhaust valve's water in the parallel state, gently insert the brewing bucket lid. After sterilized adding water to the exhaust valve. We'd like to settle any problem in a friendly manner.