CGA320 G1/2 CO2 Cylinder Refill Adapter Hose - CO2 Refill Adapter Fill Station Connector Kit,For Soda Maker Filling for Tank Bottle, 36 Inch Hose, Not Compatible with DUO/TERRA/ART

My biggest worry was that there were multiple choices for what length of the high pressure stainless steel braided hoses to buy for the various choices - so this was the "middle ground" length - which turned out to be just fine. Not too short. Not too long.The reason the hose length might matter is you need it to be high pressure so you can't exend it - it has to be the right length forever. It worked well for me with the donor tank upended on a chair and the sodastream recipient tank on the ground.Notice that you probably want the sodastream 14-1/2 ounce carbon dioxide tank to be LOWER than the donor tank, and the donor tank (if it doesn't have a dip tube) has to be held upside down so that the LIQUID carbon dioxide flows out (and not the CO2 gas at the top). So the high pressure stainless steel braided hose has to handle FULL PRESSURE (of nominally 850 psi!) which means you're not going to extend it. It is what it is. Forever.What I did to refill my 401 gram sodastream tank was put it in the freezer overnight, and then I flipped my five pound carbon dioxide tank (I don't have a siphon tube) upside down on a chair. I put the sodastream tank on the ground under the chair and screwed the top on to open up the anti-fill check valve that sodastream put there on purpose to prevent you from refilling them yourself. I blew out excess pressure from the sodastream by opening the ball valve attached to the stainless steel braided hose (but if the sodastream is partially full, you won't bother because it wastes the little CO2 you have left in the sodastream tank). Then I closed that bleeder ball valve.I opened the upended donor carbon dioxide tank valve, and then slowly, verrrrrry slooooooowly, I cracked the filler ball valve open until I heard a slight hissing sound, and then I let that work its magic for a minute until I couldn't hear it anymore. I weighed the results and I still needed 200 grams, so I must have accidentally triggered the sinister anti-customer-refill check valve sodastream so kindly implemented so as to make this taks of refilling at home harder for us. When I tried it again, I was only about 75 grams short on the 410 grams needed for a full refill - which I stopped there as I didn't want to overfill - and - when I got the last tanks back from sodastream, THEY were 100 grams underweight - so I guess that's normal.Anyway, the apparatus works well, and I like that the vents point away from you when you turn the ball valve, and I feel safe and secure with the stainless steel braided high pressure hose - and most important - the length was just right for putting the donor tank upside down securely on a chair and then putting the sodastream on the ground because you only have two hands.I wore goggles and gloves but the sodastream tank didn't get anywhere near as cold and frosted up with the liquid carbon dioxide as it did when I refilled it with 410 grams of dry ice. But even so, as a precaution, I left it outside for about an hour since when I filled the sodastream with the 14-1/2 ounces of dry ice, it frosted up and FROZE to the concrete temporarily - so if you leave it inside the house, it could DAMAGE a wooden floor due to the frosting that happens with dry ice refills. WIth the liquid carbon dioxide refill - it didn't get anywhere near as cold (obviously due to the difference between sublimation and evaporation) but I figured I'd suggest leaving it outdoors just in case for anyone reading this.BTW, I refilled the five-pound carbon dioxide tank with dry ice at about $2.50 per pound (it took about 6 poounds due to the sublimation waste) so I found the easiest COMBINATION is to fill your donor tank with dry ice and then use that liquid carbon dioxide to fill the sodastream with this apparatus.Five stars! (If I blow up, I'll reduce it by a star.)

I first purchased a 5LB CO2 tank without a siphon and I had the newer style Soda Stream canisters. This valve adapter was not working correctly. First, you have to hold the CO2 tank upside down and when releasing air slowly, the auto shutoff valve on the newer style Soda Stream canisters cuts off the tank even when not full. It worked, but not filling up canister completely and I had to refill them a lot.I got some advice from a friend and found older style Soda Stream canisters with a smaller top pin that are MUCH EASIER to fill up. You can search this online, the older style was in use for a long time until Soda Stream got hip to people filling their own canisters and redesigned the pin to make self filling more difficult. I found older style empty Soda Stream canisters on eBay.When I refilled my 5LB CO2 tank, I upgraded to a 20LB tank with a siphon. This way, I don't have to hold the tank upside down, it gets the liquid CO2 at the bottom.This new combination works perfectly. In other words - this product is well built and simple. It's just a series of valves. If you're having issues - my suggestion is to find/buy the older style canisters AND get a CO2 tank with a siphon. It's much more practical and easy to not have to hold the tank upside down. Good luck - once you get the right combo it's a great system.

The instructions seem to have been translated from Chinese with Babel Fish. After you read them a dozen times, you'll be able to figure out what they mean. Refilling the newer style Sodastream tanks is not trivial. You'll have to practice a couple of times before you get it right. With a cold (overnight in the freezer) tank, I managed to load 385g of CO2 (out of a declared capacity of 435g). According to the instructions, the older style tanks, the ones with thin center pin, should be easier to refill. If you don't mind having a 5lb gas tank in the kitchen, I would recommend getting an adapter that links the tank to the sodastream machine directly. It's easier, cheaper, and avoids inherent losses when coupling uncoupling.

I am used to using Co2 tanks, and have done so for many years. Rather than continue filling Sodastream bottles at high cost, I decided to try this with one of my 10 lb. cylinders. Followed the instructions precisely and hooked it up. Discovered the gas vented out of one of the screws behind the meter. Co2 is high pressure, and can be dangerous. A cheap or defective valve can be a potential disaster. Once that gas started venting where it shouldn't, I immediately disconnected the unit and returned.