Adapter Sodastream to CO2 bottle thread. You can connect your existing standard CO2 pressure regulator to a standard 425 g / 60 liter Sodastream CO2 cylinder without any modifications. The adapter is simply screwed between the pressure reducer and the Sodastream CO2 cylinder.
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1pcs Adapter For Crystal 0.7L Glass Bottle to Replace Plastic One Fit Sodastream FIZZI G100 DUO TERRA ART GAIA Soda Maker
Aliexpress UK
Disconnect the quick connector of the black adapter, and then tighten the black adapter to the soda machine cylinder( must turn the knob on the top of the black adapter to the highest position,the whole process does not need to turn the adapter knob down to open the sodastream cylinder,If the adjusting rod press down 6mm wide valve pin, this will close the valve and CO2 cannot enter).
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Co2 Cylinder Refill Adapter Adaptor for Sodastream Soda Stream Filling Station W/ Ball Valve,W21.8-14 Or CGA320 to Tr21-4 Tank
Aliexpress UK
This easy to use SodaStream Cylinder Filling Adaptor will enable you to fill your own CO2 from your larger bulk cylinder into smaller SodaStream cylinders. An easy and inexpensive way to fill your own Sodastream Cylinders at home at a fraction of the cost of getting the refills from your local store. Body Material:brass Can be used on large co2 tanks with W21.8-14(right hand) Connector Valve of CO2 Tank (KOR, JP, UK, Germany, France, Poland, Norway, Switzerland, Russia, Ukraine, South Africa, Sweden, Chile, Czech Republic, Singapore..) But this adapter can not fit Australia or New Zealand sodastream bottles.
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Sparkling Water Maker CO2 Charging Adapter Fill Adaptor for Sodastream Fizzi Blue Cylinder Canister (TR21-4 Thread )
Aliexpress UK
Looking for a sodastream refill adapter?. Product does not contain a valve, is adapter only, and once connected to cylinder is always open.
eBay
CO2 Quick Connect Adapter Convertor for Sodastream DUO Terra Art Soda Machine To Bubbler Tr21-4 Cylinder Tank Bottle Conversion
Aliexpress UK
SodaStream cylinders provide a cheap and convenient way of obtaining your CO2 source. However, the design of the cylinder valve's thread does not conform to any industry standard thread gauges and therefore cannot be used directly with a regulator.
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CO2 Refilling Station Ball Valve Adapter For Sodastream Tr21-4 Cylinder Carbonator,Large CO2 Tank Bottle W21.8-14 DIN477 CGA320
Aliexpress UK
Applicable to: For Sodastream Crystal 0.7L glass bottle. Quantity：1pc adapter, bottle and soda machine are not included. With this adapter you can easily use crystal glass bottles in the soda machine.
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CO2 Refill Charging Adapter to Disposable Cartridge for Sodastream Cylinder 3/8-24";G1/2-14,Tr21-4,CGA320,M16x1.5;5/8-18UNF
Aliexpress UK
Disconnect the quick connector of the black adapter, and then tighten the black adapter to the soda machine cylinder( must turn the knob on the top of the black adapter to the highest position,the whole process does not need to turn the adapter knob down to open the sodastream cylinder,If the adjusting rod press down 6mm wide valve pin, this will close the valve and CO2 cannot enter).
eBay
KegLand Deluxe Sodastream Cylinder Adapter (with Pin Adjustment) (EU Thread)
Aliexpress UK
Looking for a sodastream refill adapter?. Product does not contain a valve, is adapter only, and once connected to cylinder is always open.
eBay
CO2 Bubbler Cylinder Canister Convertor for Sodastream Tr21-4 to Art Terra DUO Quick Connect Soda Machine Maker,Adapter Only
Aliexpress UK