S-Shape Bubble Water Airlock Grommet 3-Pack Airlocks for Fermenting， Exhaust Seal Valves – Beer Wine Making Fermentation[Product Information]- PREVENT BACK-FLUSH: Use the G. Francis® S-Shape Bubble Water Airlock Grommet 3-Pack Airlocks for Fermenting， Exhaust Seal Valves – Beer Wine Making Fermentation to prevent back-flush in the fermentation chamber (cut off outside air oxidation and allow gas to escape)
- BREW YOUR FAVORITE BEVERAGES: For secondary fermentation of homebrewed beer， wine， cider， juice， and more; Can be used for long-term repeated use on fermenters typically up to 20 gallons
- EASY TO USE: Fill part-way with water in the exhaust valve， affix to the fermenter with a brew barrel cover or rubber plug/stopper on the top of the fermentation container， and cover with a lid; Instead of unattractive and poor quality drilled holes in the cap， these airlocks release CO2 through the ridges inside the cap that keep it from forming a complete seal
- WATCH THE MAGIC HAPPEN: Clear， transparent plastic standard traditional fermentation airlock that gives you a clear look inside， so you can watch the airlock do the hard work for you
- PACKAGE CONTENTS: Package includes (3) S-Shape Bubble Water Airlock Grommets for your convenience; Fermenter required， not included
