W21.8-14 Quick CO2 Refill Adapter

This W21.8-14 quick CO2 refilling adapter is a purpose-built metal solution for refilling 60L pink CO2 cylinders used with Terra, Art, Duo, E-Terra and E-Duo home carbonation systems. Compact and lightweight (~8.5 cm, ~180 g), it integrates a pressure gauge for live monitoring and uses polished, electroplated metal construction for corrosion resistance. Three replacement O-ring rubber rings are included to sustain leak-free operation over time. For best results, follow the recommended protocol: freeze the pink cylinder for 24 hours before refilling and maintain a 45-degree orientation during gas transfer — this combination ensures higher CO2 uptake and improved cost-efficiency per cylinder.