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Worth1 · January 26, 2019

Thread size of what the spout coming out of the lid?

NPT is a tapered thread all of mine are 1/8 NPT 27 threads per inch 1/16th pipe the smallest is 27 threads per inch.
The next sizes up are 18TPI for 1/4 pipe to 3/4 pipe 14TPI, 11 1/2 TPI and last but not least 8 TPI

There is no 16 threads per inch for pipe threads.

The taper rate is 1 inch in 16 inches 3/4 inch in a foot on all pipe.

I actually made my own spouts and weights for some of my pressure canners on the lathe.

This may help.

https://www.google.com/url?sa=t&rct=...HFaYvPtZkyc4QV

January 26, 2019	#66
Worth1 Tomatovillian™ Join Date: Feb 2006 Location: Den of Drunken Fools Posts: 38,539	Thread size of what the spout coming out of the lid? NPT is a tapered thread all of mine are 1/8 NPT 27 threads per inch 1/16th pipe the smallest is 27 threads per inch. The next sizes up are 18TPI for 1/4 pipe to 3/4 pipe 14TPI, 11 1/2 TPI and last but not least 8 TPI There is no 16 threads per inch for pipe threads. The taper rate is 1 inch in 16 inches 3/4 inch in a foot on all pipe. I actually made my own spouts and weights for some of my pressure canners on the lathe. This may help. https://www.google.com/url?sa=t&rct=...HFaYvPtZkyc4QV