Hello, I was looking for an idea on what exactly I would need to build my own CO2 regulator. To keep it short and simple here are my questions:
1. Is there a DUAL stage regulator that already has a CGA320 nut attached?
Yes, of course. The trick is finding them.
2. What would be the best solenoid?
This is subjective. Depends on how much you want to spend. The Burkert 6011 series are quite solid though.
3. What would be the best needle valve?
4. What do I need to attach these all together?
You will need the necessary fittings, such as 1/8" NPT male to male connectors. As the regulator body often times has a 1/4" NPT output, you will also need a reducer.
If you want to use a plumbed bubble counter, you will also need to account for the 90 degree turn, either with a 90 degree elbow, or using a metering valve that is angled.
5. What kinds of tools would I need to put this all together?
Wrenches, PTFE tape and/or pipe compound, some time.
6. If question 1. is no, how would I go about attaching a CGA320 nut myself, is this possible even?
If you purchase one without a CGA320 connector, you will need a wrench to remove the existing connector, and then attach the new CGA320 connector.
7. Do I need thread tape? Is there a paste or something I could use?
Yes and yes.
8. What is a permaseal, and can you remove the regulator from the co2 tank if you use this item? (I imagine perma means permanent but I also imagine that it'd not be great to permanently attach your regulator to a co2 tank as then how could you trade it in for a new CO2 tank?)
A permaseal replaces the disposable nylon crush washers that form a seal between the CO2 cylinder and the regulator's CGA320 connector. When you remove the regulator from the cylinder for refill, you just remove the permaseal.
If anyone could give me an exact list of what I need and maybe where I could purchase them I'd really appreciate it.
Finally, please check out my primer for pressurized CO2 (linked in my signature below) for a more exhaustive guide.