Left Hand Thread Pipe Taps???????

[JimDawson]

You can take this as Gospel, if there is a Tap, there is a Die to match.

"Billy G"

Yup, it seems that most to the major vendors have them and you can buy right/left pipe nipples. You would think that as long as I have been around industry that I would have run into them before. We just keep learning.

 

[KBeitz]

Steam manifolds was made from cast iron. 10 pipes each.
One end was left hand threads.