Better Bottle DryTrap Airlock
Better Bottle DryTrap air locks are precision check valves that have many advantages compared to liquid-filled air locks. A polished ceramic ball rests in a tapered seat to create a one-way seal. Fermentation gases can escape easily by pushing the ball up, but air is blocked from flowing in the reverse direction. DryTraps are made of an incredibly tough, proprietary type of PET that can withstand continuous service at 212 F, is easy to clean, and does not stain or transfer flavors.