Originally Posted by JimN
Look at a piece of threaded black pipe- the thread is tapered, to ensure a good seal when it goes into a fitting.
Go to an ACE hardware store- they have a set of sliding panels with bins, filled with brass fittings.
So, if it's tapered, will a 3/4" -14 tap work to clean out the threads?? I'll check out Ace today if I can break away......
The plug I pulled out matches the black pipe but whose to say the old one is correct. I guess I'll have to assume it is after all these years.