I installed a new, threaded angle valve using pfte tape and I can't get it to stop weeping. I wrapped the threads about 5-6 times and have tightened it as much as possible. I've seen discussions on leaks and pointers saying not to use too much tape, not to over tighten the joint, and mixed comments on combing tape with pipe dope. Any input would be appreciated.
I have also read those same suggestions regarding Teflon tape and or Teflon paste. You might want to consider replacing either both or just side of the fittings. I have seen new threaded pipe that was slightly out of round, barely detectable to the naked eye, but just enough to cause it to leak.
Thank you both for your input. When I went to get the new threaded adapter and valve, the plumbing store said it was unlikely to be out of round. They said before replacing anything to first try a combination of tape and paste and that many plumbers do this. They said to wrap the threads 2-3 times with tape and then add the paste on top of that. Success. No leaks.