Home brewing Airlock

Our home-brewing airlock is an indispensable tool for any brewer seeking a clean, contamination-free fermentation. Molded from food-grade plastic, it clips securely into standard fermentation bucket lids or demijohn stoppers, providing a one-way valve that lets carbon dioxide escape while keeping unwanted oxygen and bacteria at bay.

Its simple “S-shaped” chamber can be filled with water or sanitiser, creating a reliable barrier that protects your brew without the need for complex setups or constant monitoring. Compact, durable and easy to clean, this airlock works with a wide variety of vessels—from plastic buckets to glass carboys—and remains crystal-clear throughout the ferment, allowing you to observe gas production and judge fermentation progress at a glance.

Whether you’re just starting out or refining your craft, our airlock delivers peace of mind and consistently better results by ensuring your yeast can work uninterrupted in a perfectly controlled environment.

• Material: Food-grade, BPA-free plastic
• Compatibility: Fits standard bucket lids, bungs and carboy stoppers
• Design: S-shaped one-way chamber for CO₂ release
• Usage: Fill with water or sanitiser to create an airtight seal
• Observation: Crystal-clear construction for visual fermentation monitoring
• Care: Easy to disassemble, clean and sanitise

Select the required size, colour or pack option before ordering. UK delivery is included in the displayed price.