A versatile vacuum-sealable stopper for Ambrosia demijohns and other glass carboys with an approximately 5.5 cm mouth opening.
Main benefits:
- Dual-purpose useDuring fermentation, the appropriately configured stopper can function as a venting closure for a suitable vessel.
- Gas releaseWhen assembled as instructed, the valve arrangement can permit fermentation gases to escape. Never vacuum-seal actively fermenting wine.
- Protection between operationsA fitted closure helps protect stored wine from the surrounding environment.
- Vacuum storage for finished wineFor best results, choose a stopper and pump suited to the vessel and its contents.
Once fermentation has fully stopped, a compatible pump can reduce the air in the vessel's headspace. For large demijohns we recommend the 173 cm³ manual pump.
