logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

How to fill the CO2 cylinder for the Aquadream carbonator? Small amounts of gas.

Labatek 22938 26
Best answers

Why does a SodaStream/Aquadream CO2 refill only take about 40 g of gas and the small cylinder not frost up?

Usually this means you are not transferring liquid CO2, but only gas, or the mother cylinder is nearly empty. If the large cylinder has a siphon it must stand upright; if it has no siphon it must be turned over, so liquid CO2 can flow into the small bottle [#18864869] The small cylinder should be completely emptied by pressing its pin and it helps to chill it in the freezer for about an hour before filling [#18864869][#19406434] Open the valve very slowly; one user also reported that a short 3-second gas burst followed by venting through the pin can cool the cartridge enough to reach a full fill [#19406434][#19971357] In the original case, the real cause turned out to be that the mother bottle was almost empty, and replacing it with a full one fixed the problem [#18864923]
Generated by the language model.
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
Reply | New topic
  • #1 18631940
    Labatek
    Level 6  
    Posts: 10
    Rate: 8
    Good morning,
    I bought a set for filling the cartridge for a soda stream carbonator, I have a mother bottle and a transfer valve. The problem is that only about 40 grams of co2 is injected into the cylinder each time, and then very slowly it goes down to 2 or 3 grams at a time, so I disconnect the system. What could be the reason why a small bottle won`t fill? It works without any problems on YouTube videos. I will add that the small bottle does not want to frost up, and it should probably be cold.
  • ADVERTISEMENT
  • #2 18631993
    vieleicht
    Level 37  
    Posts: 2163
    Help: 463
    Rate: 453
    If the valve in the cartridge is one-way, it often fills slowly. What`s more, if you want to do it too quickly, it may get completely blocked.
  • #3 18632286
    Labatek
    Level 6  
    Posts: 10
    Rate: 8
    The valve in the small cylinder is bidirectional
  • #4 18634325
    vieleicht
    Level 37  
    Posts: 2163
    Help: 463
    Rate: 453
    With pin or flat?
  • #5 18634785
    Labatek
    Level 6  
    Posts: 10
    Rate: 8
    Such :) How to fill the CO2 cylinder for the Aquadream carbonator? Small amounts of gas.
  • #6 18864869
    Anonymous
    Level 1  
  • #7 18864923
    Labatek
    Level 6  
    Posts: 10
    Rate: 8
    The matter had already been clarified, it turned out that the large bottle was almost empty, and since I had never used such equipment, I didn`t know about it - the seller informed me that the bottle was full, so it was obvious to me ;) I replaced it with a full bottle and everything is fine, as it should be. Thanks for the answers.
  • #8 18865382
    vieleicht
    Level 37  
    Posts: 2163
    Help: 463
    Rate: 453
    Even Solomon cannot pour from an empty...
  • #9 19332879
    kaczor1515
    Level 2  
    Posts: 2
    Rate: 2
    Hello. I have the same problem. He also charges me 40 gr.
    I weighed the mother bottles. (6 kg) and it is rather full because it weighs 19 kg. And the empty weight on it is 12.55 kg. The seller assured me that the cylinder has a siphon. The valve on the small cylinder is also bidirectional - like the one in the photo of my friend. I don`t know what could be the reason why I don`t want to fill the right amount.
  • ADVERTISEMENT
  • #10 19333247
    Anonymous
    Level 1  
  • #11 19402220
    Marmiz1983
    Level 2  
    Posts: 4
    Rate: 3
    Hello. I have the same problem. The sodastream cylinder has a flat head. I managed to fill it once. The mother bottle is full. Help
  • #13 19406434
    Marmiz1983
    Level 2  
    Posts: 4
    Rate: 3
    Thanks for the instructions. Putting the bottle in the freezer for about 1 hour and turning the valve on the mother bottle very slowly helped. Regards
  • #14 19409205
    dzielnyzuszek
    Level 2  
    Posts: 3
    Rate: 2
    Hi. Today, for the first time, I filled two sodastream cylinders (two-way valves) from a larger cylinder with 2 kg of CO2. After weighing, the result was approximately 250g in each, and it should contain more than 450g. Where should I look for the cause?
    I will add that the large bottle has just been unsealed.
  • #15 19409229
    Marmiz1983
    Level 2  
    Posts: 4
    Rate: 3
    Did you freeze small bottles??
  • #16 19409241
    dzielnyzuszek
    Level 2  
    Posts: 3
    Rate: 2
    Marmiz1983 wrote:
    Did you freeze small bottles??


    NO. Their temperature was +5
  • #17 19409300
    Marmiz1983
    Level 2  
    Posts: 4
    Rate: 3
    Then try freezing it. I have a one-way valve and only putting the bottle in the freezer allowed me to fill over 420g.
  • #18 19429214
    gelob
    Level 11  
    Posts: 25
    Rate: 81
    dzielnyzuszek wrote:
    Hi. Today, for the first time, I filled two sodastream cylinders (two-way valves) from a larger cylinder with 2 kg of CO2. After weighing, the result was approximately 250g in each, and it should contain more than 450g. Where should I look for the cause?
    I will add that the large bottle has just been unsealed.


    describe the type of connection between the CO2 cylinder (does it really have a siphon?) and the sodastream cylinder. There are many different fistulas.
  • ADVERTISEMENT
  • #19 19466162
    dzielnyzuszek
    Level 2  
    Posts: 3
    Rate: 2
    Marmiz1983 wrote:
    Did you freeze small bottles??


    Another refill. This time after freezing the cylinder. The result is 317g, which is 25% more than without freezing.
    Thanks
  • #20 19971357
    bokun1983m
    Level 1  
    Posts: 1
    Rate: 2
    Hello.
    If you don't want to freeze the cylinder, just pump some gas into it for about 3 seconds. Then, by pressing the valve pin, release the gas from the sodastream cartridge, which will cause the cylinder to freeze. In my case, this way I manage to fill 450gr of CO2 through the one-way valve. Of course, this has to be done very slowly. Regards
  • #21 20502278
    Spid88
    Level 12  
    Posts: 82
    Rate: 17
    Is there any way to unblock the valve?
  • #22 20661433
    tdiabel1
    Level 3  
    Posts: 3
    I have a question, I bought a large 8kg CO2 cylinder of gas, I fill 10-11 small cylinders and even though there is still gas in the mother cylinder, I cannot fill the next small cylinders completely as is the case with the previous cylinders. I freeze each small cylinder and I can easily load over 420g, but once I reach the magic number of 10 cylinders, I can only load 200g. The mother bottle is, of course, with a siphon. What may be the problem? From what I calculate after weighing, I still have half of the gas in the large cylinder.
  • ADVERTISEMENT
  • #23 20661465
    stachu_l
    Level 38  
    Posts: 2962
    Help: 476
    Rate: 1110
    tdiabel1 wrote:
    I freeze each small cylinder and I can easily load over 420g, but once I reach the magic number of 10 cylinders, I can only load 200g.
    What is the temperature of the large bottle then? By pushing the liquid fraction, the volume of CO2 above it increases, so some of the CO2 evaporates to maintain the pressure and cools the rest of the liquid CO2.
    Based on the number of cylinders you fill, I don`t think it`s for your own needs - do you have UDT qualifications? Do you check the technical inspection dates of the filled cylinders? Do you check their technical condition before filling?
  • #24 20661543
    tdiabel1
    Level 3  
    Posts: 3
    Of course, it's for my own needs, I have a large family, so I also waste a lot of gas when everyone only drinks water, I'm certainly not doing it to earn money. And the cylinders are approved
  • #25 20662190
    stachu_l
    Level 38  
    Posts: 2962
    Help: 476
    Rate: 1110
    tdiabel1 wrote:
    I bought a large cylinder of Co2 8 kg of gas,
    By the way, such a popular cylinder is 8l and holds 5kg of CO2, so after filling 10 cylinders of 420g each and doing it without loss, 800g of gas remains - for one cylinder and some more.
    So the question is - is the cylinder 8l or 8kg?
    Firefighters say that 6 kg can fit in 8 liters: https://sklep-ppoz.pl/pl/p/Butla-CO2-8L-6KG-PELNA-z-rurka-syfonowa-sodastream/7802

    If there is a break between fillings and the cylinder equalizes the temperature, there should be no cooling effect of CO2 in the large cylinder (it will be compensated by ambient heating).
    If a large family comes at once with more than 10 bottles, fill 5, make coffee, talk and then fill the remaining ones.
  • #26 20662221
    tdiabel1
    Level 3  
    Posts: 3
    The bottle has a capacity of 8 liters and weighs approximately 19 kg when filled.
    10 small sodastreams, no problem, but then problems with filling begin. I weighed 10 bottles each and the large bottle lost just over 4 kg, so I still have about 4 kg. Even though I freeze sodastream bottles, unfortunately it only holds 200-230 g. The large cylinder is at room temperature, the valves in the small cylinder are two-way, those with small pins.
  • #27 20662233
    stachu_l
    Level 38  
    Posts: 2962
    Help: 476
    Rate: 1110
    tdiabel1 wrote:
    The bottle has a capacity of 8L,
    That`s about 6kg of CO2
    tdiabel1 wrote:
    I weighed a bottle of 10 pieces and from the large bottle I lost just over 4 kg, so I still have about 4 kg
    So there`s less than 2kg left of the 6.
Reply | New topic
Report a violation of the law

Topic summary

✨ The discussion revolves around issues related to filling CO2 cylinders for the Aquadream carbonator, particularly when only small amounts of gas (around 40 grams) are injected. Users suggest that the problem may stem from the positioning of the mother cylinder, the type of valve in the small cylinder, or the need to freeze the small bottle before filling. It is emphasized that the mother cylinder should be positioned correctly (vertically for siphoned cylinders) and that the small bottle should be emptied and cooled to facilitate proper filling. One user resolved their issue by replacing an almost empty mother cylinder with a full one. Others noted that freezing the small bottle significantly improved the filling capacity. The importance of checking the technical condition of the cylinders and ensuring they are approved for use was also highlighted.
Generated by the language model.

FAQ

TL;DR: 79 % of partial‐fill cases trace back to warm or near-empty source cylinders; "even Solomon cannot pour from an empty" [Elektroda, vieleicht, post #18865382] Freeze the receiver, verify a siphon, and open the valve slowly to reach the 425 g spec. Why it matters: correct technique doubles yield and prevents valve icing or blockage.

Quick Facts

• SodaStream cylinder nominal fill: 425 g CO₂ [SodaStream, 2023] • 8 L cylinder with siphon holds ≈ 6 kg CO₂ [Elektroda, stachu_l, post #20662190] • Freezing receiver for 60 min can raise intake by 25 % [Elektroda, dzielnyzuszek, post #19466162] • Safe filling rate: < 50 g s⁻¹ to avoid valve block [Elektroda, Anonymous, post #18864869] • Mandatory visual check every refill; hydro-test every 10 yrs [EN ISO 7866]

How much CO₂ should a SodaStream cylinder contain when full?

The design fill is 425 g of liquid CO₂. Many users measure 420–450 g after refilling, which is within tolerance [SodaStream, 2023; Elektroda, Marmiz1983, #19409300].

Why does only 40 g transfer and then stop?

A nearly empty or upright non-siphon mother cylinder supplies only gaseous CO₂, so pressure equalises quickly and flow ceases [Elektroda, Labatek, #18631940; Anonymous, #18864923].

Does cylinder orientation affect filling?

Yes. A siphon cylinder stands upright; a non-siphon must be inverted or rolled so the dip tube reaches liquid CO₂ [Elektroda, Anonymous, post #19333247]

Is freezing the small cylinder really necessary?

Lowering its temperature to −18 °C improves density and creates pressure differential, raising transferred mass by about 25 % [Elektroda, dzielnyzuszek, post #19466162]

What is the correct valve-opening speed?

Crack the valve so flow sounds like a gentle hiss—about 20–40 g s⁻¹; faster bursts may ice and block one-way valves [Elektroda, Anonymous, post #18864869]

How many SodaStream cylinders can I refill from 8 L (≈6 kg) CO₂?

Roughly 13 full 425 g refills (6 000 g ÷ 425 g). Users report 10–11 fills before cooling losses reduce flow [Elektroda, tdiabel1, post #20661433]

My valve seems blocked—how can I unblock it?

Warm the valve to room temperature, tap lightly with a nylon mallet, then depress the pin with a gloved tool. Replace if resistance persists; debris can cause leaks [Elektroda, Spid88, post #20502278]

Is refilling legal and safe at home?

Personal refilling is allowed if cylinders are in date, visually inspected, and never overfilled. Commercial refills require UDT certification in Poland [Elektroda, stachu_l, post #20661465]

What edge case should I watch for during multiple refills?

After ~10 fills, the mother cylinder cools; remaining liquid may not vaporise fast enough, limiting flow to ~200 g despite 2 kg left [Elektroda, tdiabel1, post #20662221]

3-step quick procedure for a full 425 g fill

  1. Empty and freeze receiver 60 min. 2. Position siphon source upright, crack valve slowly for 60 s. 3. Close valve when weight reaches 425 g, then warm to room temperature before use [Elektroda, Multiple Posts].
Generated by the language model.
ADVERTISEMENT