Thanks much! So it sounds/looks like what I have is the 3/4, and the 3/4 refers to how big the inner diameter of the pipe itself is, that has this thread?
Discussion
Yeah, that's right, just from how it looks from this picture. And assuming you don't have some non-standard fitting. But NPT is the most common.
Yea, the replacement options were 3/4 or 1". I remembered getting the wrong thing last time I needed NPT, so I wanted to be sure. Thanks again!