"nexxo: Thing is, even if you fit 1/2" barbs on an Aquatube, you're dealing with a restriction at the threaded end as it is a 1/4" thread. Instead, I just drilled out my Aqua-Tube thus:" ...
Nexxo, FYI pipe size is the accepted industry designation, not the actual measured size. The inside diameter of 1/4"NPT thread is 3/8...
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