No. But, almost always, yes. Assume RH unless stated otherwise.Isn't all npt threads are right handed?
Use a few wraps of tape and tighten. If you get it to the correct position and it's tight, great! If you can't get it that far around, remove, remove the tape, retape with more or fewer wraps, and try again.Last question: how to tighten it so the dial facing the nob with Teflon tape?