One-Way Fermentation Airlock – Beer & Wine Brewing Valve
One-Way Fermentation Airlock – Beer & Wine Brewing Valve
One-Way Fermentation Airlock for Beer, Wine & Homebrew
Take your homebrewing to the next level with this compact, one-way plastic fermentation airlock. Designed for beer, wine, mead, cider, and more, this airlock creates a sealed system that lets carbon dioxide escape while keeping oxygen and unwanted bacteria out — protecting your brew at every stage of fermentation.
Made in Mainland China.
Key Features
- One-Way Venting: Allows CO₂ to escape freely while blocking oxygen and airborne contaminants from entering your fermentation vessel.
- Universal Fit: Standard 3/8" stem fits any homebrew stopper, cork, cap, plug, bung, or grommet — compatible with virtually any fermentation setup.
- Secondary Fermentation Ready: Prevents back-flush into the fermentation chamber during ambient temperature fluctuations.
- Easy to Clean: Simple design makes sanitizing quick and straightforward between batches.
- Lightweight & Compact: Easy to store and handle; won't take up precious brewing space.
- Versatile Use: Works great for beer, wine, cider, mead, shine, and other fermented beverages.
Specifications
| Material | PP (Polypropylene) Plastic |
| Height | 4.6 in (12 cm) |
| Width (widest point) | 1.5 in (3.8 cm) |
| Stem Length | 1.5 in (3.8 cm) |
| Stem Width | 0.44 in (1.11 cm) |
| Quantity | 1 x Airlock |
What's in the Box?
- 1 × One-Way Fermentation Airlock
Care Notes
This airlock is made of thin, lightweight plastic. Handle with care — avoid dropping or applying excessive pressure to avoid damage. Rinse and sanitize before each use for best results.
Looking for more kitchen and beverage tools? Check out our 2.8L Beverage Dispenser with Spigot or explore our Cordless Rechargeable Milk Frother for more drink-making essentials.
Note: Colors may vary slightly due to monitor settings and lighting conditions. Please allow a measurement tolerance of 1–3 cm due to manual measurement.
Learn more: Nutrition.gov on cooking and food safety
Frequently Asked Questions
Q: What size stopper or bung does this fermentation airlock fit?
A: This airlock features a standard 3/8" (approx. 1.11 cm) stem, making it compatible with a wide range of homebrew stoppers, corks, caps, plugs, bungs, and grommets. If your vessel has a 3/8" hole, this airlock will fit right in.
Q: Can I use this airlock for wine as well as beer?
A: Absolutely! This one-way fermentation airlock is designed for use with beer, wine, cider, mead, and other fermented beverages. It effectively vents CO₂ while keeping oxygen and bacteria out, making it suitable for any homebrew application.
Q: How do I clean and maintain this brewing airlock?
A: The simple one-piece design makes cleaning easy. Rinse thoroughly with warm water and use a standard homebrew sanitizer before and after each use. Avoid harsh scrubbing or dropping the airlock, as it is made of lightweight plastic and requires gentle handling.