Soda CO2 Pressure Regulator Adapter for Aquariums Homebrew,Female TR21-4 Soda Cylinder to Male G1/2 Paintball Co2 Tank

EDIT: After reviewing the FZONE listing again, I realized I have this screwed directly into the CGA320 adapter (how that regulator comes default) and NOT the paintball adapter. That is why I had to remove the needle valve from this adapter. I'm not leaking, and it's working, so I'm keeping it this way. I had assumed CGA320 and paintball threads were different, so when it screwed right into the CGA320 fitting I thought the paintball adapter was the adapter that was on there by default. If you use the RIGHT adapter on the FZONE, you don't need to remove the needle valve from product. So, the below is just for people with only a CGA320 fitting on their regulator. This product WILL work with them.CGA320 fitting instructions:There is one problem, you have to remove the needle valve from this adapter to get it to work with the FZONE Mini C02 regulator (EDIT: CGA320 only). It's easy, as long as you have a pair of snap ring plyers. You can get them from auto parts stores for like $5. The FZONE Mini regulator (CGA320) doesn't have any way to depress the needle valve in the top of this adapter. I considered, and at first attempted, to just file slots in the needle valve, but then I noticed two small depressions in the bottom of the valve, and grabbed my snap ring plyers instead. Sure enough, the whole valve screws out from the bottom. Easy as pie. Then you just take the needle and the spring out, and screw the base back in. Make sure you use two wrenches to get the adapter and the regulator screwed together tightly, and then screw the whole thing onto the soda stream bottle. On the last twist, it opens the bottle and you have pressure!I'm running one bubble per second at about 50 psi right now. For anyone else doing this, I'll report back on how long the soda stream bottle lasts.

I have the Terra version of the SodaStream and was excited to get this alternative to replacing bottles, especially now that Bed Bath and Beyond has gone under. Up until then (well earlier this week) I used really old five dollar off BB&B coupons to get replacement bottles for about twelve dollars. I bought this and am very disappointed that it started to leak after about 2 months of use. CO2 would leak out of the front stem (the part that dips into the water and infuses CO2) when the machine was not in use. I would hear a gentle hissing noise and realize that the infuser stem was just releasing CO2 into the kitchen. The issue is with the black adapter, which is a clone - albeit not a good one since it leaks - of the top valve/adapter of a genuine SodaStream bottle. Also the black hose that comes with this setup was kinked when I received mine, but it's tested to very high psi so I wasn't concerned about the kink and it did not impact the initial success that I had with this. I may try to dissasemble this clone adapter valve like another reviewer did and see if the seal is fixable. Either way, I bought a different brand that uses the original valve from a genuine SodaStream bottle. I was apprehensive at first about having to unscrew/remove a valve from a genuine SodaStream cylinder because valves like this are typically extrodinarily hard to remove for obvious reasons (high pressure, safety) but after completely using up a bottle and releasing ALL of the remaining residual CO2 by pressing the center pin, it was easy to unscrew the valve using a bench vise and a pipe wrench with good leverage. Then I just screwed it into the adapter of the new setup and I'm up and running with no leaks. My new setup also has a pressure release valve, a gauge, and steel braided hose. I definitely recommend finding a different setup that uses the original SodaStream valve adapter. The extra step of using a genuine valve is well worth it!

Wish more people would know about this. save tons of money while still enjoy making new drinks daily. took 1 min to hook up to my tank

Works great on my regulator.

I got a brand-new e-Terra which Sodastream sent me to replace my One Touch, which died under warranty leaving me with four full 'blue'-style full CO2 cylinders. So I bought this so I could use up my $60 of CO2.When I screw this "Blue cylinder conversion adapter for Terra" onto the blue cylinder, the cylinder is then an inch higher than the new-style pink cylinder. --AND-- I cannot follow the instructions (shown below) because THERE IS NO WAY TO DISASSEMBLE THE BOTTOM OF MY E-TERRA, so I cannot use this at all. Returning.3. Turn the soda machine upside down. There is a semi-circular thin plastic bridge (pink part) on the bottom of the machine ,it need removed to put the new version cylinder, unless the new version cylinder will be high to insert machine.4. Remove the punch housing cover and tilt or lift the device slightly back.5. Insert the new version cylinder in the bottom of machine firstly, then put the cylinder head into the pink cylinder seat. Then turn the cylinder so that the burst disk on the cylinder faces outward.I am attaching the instructional photo provided by the seller. Before you buy this item, look on the bottom of your Sodastream and see if **your** machine looks like the example. Because mine does NOT.

I used this to adapt a soda stream bottle to a paintball remote coil. Works just fine...

Bought this adapter to hook up a Sodastream CO2 canister to a FZONE paintball regulator. Works perfectly.

Do not buy!! The cheap plastic part that slides into the Sodastream broke and was leaking Co2. Customer service was of no assistance. Save a lot of money and don't purchase this. It will inevitably break down.