Published 15 January 2019 13:13 How can I be sure that the gas cylinder I have fits my sparkling water maker? As long as you're using an official SodaStream gas cylinder it will be compatible with our sparkling water makers! Related articles I own an older SodaStream sparkling water maker, can I use your current bottles, gas cylinders and flavours with my model? Are all types of SodaStream bottles compatible with all SodaStream Sparkling Water Makers? What's the difference between gas exchange vs back up gas cylinders? What do I do when my gas cylinder runs out of CO2?