I have two single regulators for my co2 tank and was looking to make them one. Can I by a double threaded two inch attatchment and just remove the gauge on one and the co2 in on the other and connect them together?
Yup, you just have to match the threads at both ends (right vs left) of the 2" brass 1/4" pipe nipple as not all regulator ports (in and out) use right-hand threads...
I have had a hell of a time finding the right threaded nipple for this same project. I think my regulators would require 1/4" left-handed threads on both sides. Please post a link here if you find one.