How do you connect copper pipe to pvc (residential use)?
Question:I need to connect pvc to copper piping - how can I do this correctly and have it not leak? 1/2" pipe size - Residential use.
Answers:
You need to solder a female adapter to the copper pipe and glue a male adapter to the pvc (preferably sch. 80). Do not do it the other way around or the pvc fitting will crack.
Use PVC male adapter and copper female - this compresses the plastic. If you do it the other way you stand a very good chance of splitting the plastic part. Put 3 or four wraps of teflon tape on the male threads, tighten 2 turns past finger tight. If you really want to be certain, use rectorseal on the threads instead.
If you are connecting to cpvc(the beige stuff),then there are special fittings for that. And actually you can use a standard compression coupling or compression shutoff valve and it will seal fine.
If you are trying to connect copper water lines to standard pvc, then that is not a good idea. Standard (white) PVC is not for potable water and is not rated for the 30+ psi constant pressure that it will have.
Siouxchief.com has special fittings that are copper to pvc transition fittings. They are factory made copper with a pvc insert. Hope this helps
copper male or female fitting and pvc same size adapter with pvc glue and thread tape
There is an adapter available this is the only method that will work.
the end of the copper pipe must have a female or a male fitting om it than get a pvc connector and thread it onto the copper fitting using Teflon tape should work fine
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