Thread: NPT vs. ID
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Unread 01-09-2003, 09:56 PM   #25
Since87
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Join Date: Sep 2002
Location: Indiana
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I've seen substantial variations in the ID of 1/2" Barb X 1/4" NPT parts.

Unless the restriction is likely to be of some value, I just run a 3/8" drill through them.
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