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Finally found it full page in my own compfuser archives...
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Excellent explanation, thanks, Rambler.
So T in NGT is for Taper, and T in NPT is for Thread. Interesting.
CGA870 is a pin index medical O2 valve. I can't find anything online referring to CGA850. Can you point me to an example? As my name says, I'm curious to learn.
the "T" in NGT and NPT refers to taper not "thread"
Machinery's Handbook (29th ed.):The symbol designations are as follows: NPT - American National Standard Taper Pipe Thread;
ASME B1.20.1-2013:1.3.2 Each of these letters in the symbols has significance as follows:
N = National (American) Standard
P = Pipe
T = Taper