So here is the finished product!
, on Flickr
Unfortunately it is attached to an old 20oz paintball canister (dated 2/97 lol). I will get a new one this afternoon.
The only additional thing I purchased at Home Depot was a Watts A-716 1/8" MIP x 1-1/2" male-male fitting.
The only thing I don't have a part number for is the 90º fitting, I had it laying around. It is a 1/8" male to 1/8" female fitting.
All of the part's that I used, less the 90º fitting and air source adapter are as follows:
Total cost was about $10 at Home Depot-
Watts A-183 3/8" Flare MIP - 3/8" MIP
Watts A-760 3/8" female - female coupling
Watts A-776 3/8" male to 1/8" female
Watts A-716 1/8" MIP x 1-1/2" male - male
On a side not, and as best as I can tell without disassembling the regulator, the nipple that the co2 hose connects to on the regulator appears to be 1/8" as well. With that said, there should be no reason that you couldn't remove the nipple, swap it out for another Watts A-716 fitting, and install a solenoid. I only mention it because I know some of you were posting about it in the solenoid thread.