The soda maker CO2 tank adapter is a practical accessory that allows you to connect your soda maker to a larger external CO2 tank, such as a 5LB, 20LB, or 50LB capacity tank. This solution allows you to avoid expensive disposable tanks and use a more economical and long-lasting carbon dioxide source. The kit includes everything you need for a convenient and safe connection.
This CO2 cylinder adapter for soda machines is designed for home users who want to save money and avoid frequently making carbonated water with small disposable cylinders. Connection is simple: screw the valve onto the soda machine, attach it to the CO2 cylinder with a nut, connect the quick disconnect connector, and open the cylinder valve. When disconnecting, it is important to first close the cylinder valve and release any remaining CO2 by pressing the soda machine button.
Q: Will this adapter fit my soda machine?
The adapter is compatible with all soda water machines with a TR21-4 thread. Before purchasing, it is recommended to check the type of connector on your machine to ensure proper compatibility.
Q: How do I safely disconnect the adapter from the CO2 cylinder?
First, close the cylinder valve, then press the soda machine button to release any remaining CO2. Only then disconnect the quick disconnect connector, otherwise the O-ring may burst.
Q: What size CO2 cylinders can I use?
The adapter is compatible with 5LB, 20LB, and 50LB commercial CO2 cylinders with a W21.8-14, G3/4, or CGA320 valve connection, depending on the country's standard.
The CO2 cylinder adapter for soda machines is a convenient and economical solution for those who value comfort at home. Recommended for everyone looking for a long-lasting alternative to disposable cylinders.
Sources: Carbon dioxide (CO2) | TopSmart store












| Weight | 0.305 kg |
|---|---|
| Dimensions | 25 × 23 × 2 cm |
| Brand | BAZUKA |
| High- related chemical | none |
| Origin | Mainland China |
| Nut Thread | G3/4, W21.8, CGA320 |
| Hose Langth | 250cm / 100 inches |
| Adapter Thread | TR21-4 |
| Connect | 8mm Quick Disconnect |
| Option | Yes |
A * * * z –
Question: CGA320 2.5M
Customer –
So far i’ve been surprisingly impressed. The quick disconnect helps fix some of the nightmare that is getting the actual hose into your machine. It also doesn’t seem to have immediately failed like some others have
Question: W21.8 2.5M
P * * –
Works well, no additional reducer needed.
Question: W21.8 2.5M
A * * * i –
Fits CO2 gas cylinder, after a week of use, everything is fine.
Question: W21.8 2.5M
Customer –
Works very well. Spare gaskets included in the set.
Question: W21.8 2.5M
V * * * k –
Question: G3-4 2.5M
Customer –
I am very satisfied with the product. I’m glad i was able to purchase it at a low price.
Also, the shipping was fast, arriving in about a week.
Question: W21.8 2.5M
Customer –
Question: CGA320 2.5M
Customer –
Its great, but not for australian sodastream! To use with australian sodastream you need to completely empty and remove the top from an australian sodastream bottle, and buy an additional adaptor (m18x1. 5mm) for the quick connect, as well as a dowty washer or high pressure (not teflon) setting liquid gas seal to seal them, then screw this into your australian sodastream.
Other than that, this setup is of incredibly high quality.
Question: CGA320 2.5M
n***e –
Question: CGA320 2.5M
Customer –
Connected this easily to my 6.3kg co2 tank and my drink carbonating machine (a drinkmate omnifizz, similar to the sodastream). now i have the equivalent of 16 of the smaller bottles before i need to refill the large 6.3kg tank. this works out much cheaper. solid build quality and a total no brainer.
Question: W21.8 2.5M