Yes, I know what you mean.Anticlockwise? Which way round are you holding it? This was discussed on here recently https://www.diynot.com/diy/threads/...w-rad-thermostat-wont-fit.606475/post-5418528
It's all relative.
If you're looking at the tail thread straight on, so the bit that goes into the radiator, it's clockwise.
Maybe it's easier to say that if you hold the tape still, you have to screw the tape into it (maybe this is even more confusing).
Yes, that is what should be the standard.I also run a blade around the tail once it's tightened and peal off the excess tape, just to neaten it up.
A professional plumber once laughed at me because he said nobody looks at that.
But I couldn't sleep at night knowing that there's a chunk of ptfe tape showing on a radiator tail...