Soda Machine Co2 Adapter with High Pressure Stainless Steel External Hose, CGA320 Co2 Tank Direct Adapter to TR21-4 Soda Water Machine Compatible with Jet Aqua Fizz(36 inch)

Great product so far... the dial is quite small to read though.

It worked for 3 days and then the adopter started leaking CO2 as soon as the valve is open from the CO2 tank. Extremely disappointed. I opened it and checked and connected with the tank directly and confirmed it’s leaking gas. The pin doesn’t need to be depressed and it leaks

Excellent quality, solid brass and stainless steel braided hose.

Works like a charm. Got it connected to my 20lbs CO2 and directly went into my sodastream Terra. I drilled a small hole to get the pipe thru the back. 5 min all setup and working. No more small bottles refills!

Works great, fits right into the sodastream and onto a C02 tank. If you're not connecting to a 5LB or bigger tank, you need to, it's life changing.

The system works but there is some kind of oil coating on the parts that flavors the co2 leading to a red beet taste. I had to waste the included replacement parts because it is hard to get the small white washers out after first use. After breaking down all parts except the hose, I found globules of oil in some of the female fitting cavities. Cleaning with denture tablets, an ultrasonic cleaner and reassembling removed all oil and foul tastes.

Overall I recommend this product. It lets you use your SodaStream with its proprietary fittings with a standard CGA320 CO2 cylinder that home beer brewers use. No regulator is needed as the SodaStream Terra comes with a built-in regulator. I confirmed this with SodaStream's customer service. Construction Looks well-built, with metallic construction all around. I think the hose made from a stainless steel braid. The fittings look like brass. Connections The part that goes into the SodaStream works much like those SodaStream cylinders. There's nothing to tighten down on this end into the SodaStream. You just slip it in. There is a quick disconnect sleeve, though I don't use it. It's hard to get it once the SodaStream retaining clip goes over the fittings anyway. I suppose this is in case you want to relocate the entire setup. Moving it in parts is easier than a whole. The male fitting that goes to the CGA320 CO2 tank needs to be tight! Otherwise, you will have a small leak. I thought I had tighten it down when I first installed the fittings. Whenever I turn on the valve to make some soda water. I would feel cold air against my hand. Being a CO2 nob, I thought this "cold air" was just the valve getting cold from the sudden inrush of CO2 into the hose, lowering the temperature of the air around my hand. Over time, this leak worsened. I started feeling more coldness and eventually air. That's when I realized I needed to tighten the fitting even more than I had with my crescent wrench. Close Valve After Every Use This brings me to another point. When I'm done making soda water, I close the valve on the CO2 cylinder side and bleed the air out through the SodaStream. I do this for safety. For example, the hose and/or fittings can fail. If they fail, this means I just lost all the CO2 in my tank. This vents into the kitchen. I want to avoid asphyxiation. I know asphyxiation is low, given the large volume of the kitchen space, compared to the CO2 gushing out. Still, I close the valve after every use. Regulator? No regulator is needed to regulate the sudden outrush of CO2 gas into the SodaStream. The SodaStream itself comes with a built-in regulator to prevent sudden rises in pressure and explode, causing injury to the user (think bomb with cheap, plastic parts that the SodaStream). This is according to the SodaStream customer service rep that I spoke with over chat. What Else Do I Need? Besides a CO2 tank, this hose is the only other thing you need to convert your SodaStream machine to use the CO2 tanks that home beer brewers use. Cost The cost of a 5 lb tank of CO2 is $30 per refill. The cost to subscribe to SodaStream's service for the same amount of gas is about $111! It makes sense to spend some money upfront to get this system. Overall, I spent about $222 in upfront costs to get myself set up, not including the SodaStream machine. I spent about $148 on a 5 lb CO2 tank with gas, an end table ($40.95) on which to place my SodaStream machine. Underneath the table, I placed the CO2 cylinder. The hose was $39 as it was during Amazon Prime. Break-Even Analysis This sounds expensive, until you do the break-even analysis. You start getting your money back on the third refill, with a +$50 gain. Each refill nets you 5 lbs of CO2. Of course, it depends on how often you use the machine. If you use little CO2, you might break even after several years. Is it worth it to you at this point? Would you be better off subscribing to SodaStream so that your money is free do to other things? Only you can answer the question. For me, I have noticed that I drink a lot more water now that I did, before getting this setup together. I don't like to drink flat water, which means I drunk little water. Bad for the body in general. With this setup, I find myself drinking about a liter a day now. I just love the "bite" and the fizz of carbonated water. Conclusion I recommend getting this hose. This helps you to save money in the long run. Otherwise, you will spend dollars to save pennies.