I will be threading a 3/4" male PVC adapter into a female brass tee, to feed my sprinkler control valves. I've heard of different "best" methods for sealing plastic threads into metal. It appears my choices are: 1. 4 wraps of Teflon tape around the male plastic threads, and nothing else 2. 2 wraps of Teflon tape PLUS pipe dope formulated for plastic and metal 3. Pipe dope by itself (I have Rectorseal Tplus2 with PTFE) This connection will always have water pressure on it, and will be underground. How would you pros and more experienced amateurs seal the threads? And again, this is PVC, not CPVC.

While dealing with a recent clog in our lateral line running to the street, I accessed the sewer cleanout for the first time. While it seems most new cleanouts are PVC pipe with a cap, mine is cast iron with a metal vent over the top: [ATTACH]71325[/ATTACH] I had to dig around the access point a bit because the cleanout pipe was cracked about 12 inches below the surface, and that last piece was angled a bit so I couldn't use my curb plunger to get down in there. Is there a good way to attach a PVC fitting to the cast iron cleanout pipe in order replace the last 12 inch piece that is separated? [ATTACH]71326[/ATTACH] [ATTACH]71327[/ATTACH] Thanks!