The Bung fits Standard Glass Demijohns. Bung Size.
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High Quality Bubbler Airlock for Wine and Beer Making. It is essentially a one way valve.
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Simply half fill with water and fit to the top of your demijohns and they will allow the CO2 to escape but won't allow any nasties to get to your wine.
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High Quality Bubbler Airlock for Wine and Beer Making.
eBay
BUBBLER AIRLOCK +. Bored Rubber Bung with 9 mm Hole for standard airlock, bubbler, stopper High Quality Bubbler Airlock for Wine and Beer Making. It is essentially a one way valve. RUBBER STOPPER BUNG.
eBay
Simply half fill with water and fit to the top of your demijohns and they will allow the CO2 to escape but won't allow any nasties to get to your wine.
eBay
The Bung fits Standard Glass Demijohns. Bung Size.
eBay
Airlocks let CO² out without letting contamination in. The Bungs fit Standard Glass Demijohns. Just half fill with water and you're ready to go.
eBay