I redid my water main setup with regulators, ball valves etc and my
irrigation line. Got the whole thing together and soldered and had leaks.
Took a section apart and redid it and solved that problem. Now the
irrigation line is leaking!!! I took it apart again and am wondering about
one thing. When connecting a PVC line to a copper line is teflon tape best
or a teflon based pipe thread compound or both? Do I tighten real tight or
just finger tight? And lastly, can I solder a copper line with the PVC
connection already made or will this melt the PVC to Copper connection? I
cut a section about 6" away and it would be easier to just put back
toghether with a slip coupling without disconnecting the PVC line. I thought
about using a copper expoxy to avoid the heat in this application. Any help
would be appreciated.
I'd use Teflon tape (the solvent in the thread compound may soften the
PVC over time). I'd also recommend using a female PVC adapter and a
male copper adapter. The reason is that there is very little material
thickness in a male PVC adapter so it will distort or cold flow more
readily than the thicker female PVC adapter. If this a a real problem
consider using schedule 80 (gray in color) for the PVC adapter.
Do I tighten real tight or
About 1 turn with a wrench.
And lastly, can I solder a copper line with the PVC
Don't solder with the PVC connected.
Copper epoxy won't bond reliably to PVC.
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