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Butcher · 01-02-2002, 06:31 PM

1/2" NPT is a bit big for 1/2" ID tubing - 3/8" gives you a 10mm bore roughly, you can't get much bigger without making the walls of the barb section too thin. If you're going for 5/8" or even 3/4" tubing though 1/2" NPT is the way to go.

01-02-2002, 06:31 PM	#39
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	1/2" NPT is a bit big for 1/2" ID tubing - 3/8" gives you a 10mm bore roughly, you can't get much bigger without making the walls of the barb section too thin. If you're going for 5/8" or even 3/4" tubing though 1/2" NPT is the way to go. __________________ Once upon a time, in a land far far away...