Sealing male PVC threads into brass fitting?

Old 09-28-16, 02:58 PM
Thread Starter
Join Date: Sep 2016
Location: USA
Posts: 24
Received 0 Votes on 0 Posts
Sealing male PVC threads into brass fitting?

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.
Old 09-28-16, 03:19 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Posts: 68,799
Received 2,677 Votes on 2,429 Posts
Pipe threads are tapered and don't require much to seal them. A few wraps of tape are fine.
Old 09-28-16, 03:30 PM
Join Date: Jan 2011
Location: USA
Posts: 5,005
Received 123 Votes on 108 Posts
Does not matter if it's PVC or CPVC same rules apply.
Want to make 100% sure it does not leak my vote goes for 2, wraps of tape then the pipe teflon pipe dope.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: