I have long and hard thought about this. I'm convinced it's possible, but it's very VERY tricky.
IMO, #1 issue for splitting a CO2 tank is independent volume control for each output.
The best way to do this, I think, is to split the output before the regulator, and then have 2 regulators, each with their own needle valve and bubble counter.
Problem is I haven't found the parts to do this. I haven't looked that hard yet, but I haven't found any plumbing fittings with the correct threading for CO2 lines. They might be out there, they might not, I don't know.
The other way is just basically have two needle valves after a splitter and then just fiddle with them until you have close to the desired flowrates. Problem is if you adjust one, you inadvertently adjust the other.
Good luck! If you figure out a way let us know.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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