Possible but harder to do neatly and keep straight, notice the different sized copper tubing with all the valves and drains. Probably made up off site. The only thing I'd change is that drain (I presume it's a drain), at the lower right. I would have put an elbow on the end of the copper tubing then necked down to the valve. But it could be a charge port. 
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The descent of man ~ Nixon, Friedman, Reagan, Trump.
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