Copper to PVC Vaste Drain

Old 07-06-04, 04:55 AM
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Smile Copper to PVC Vaste Drain

Hello all. I hope all is well. Quick question. My grandparents called me over to look at their plumbing. I found they have a leak in the main waste drain from the upstairs toilet. What I would like to do is replace the leaking elbow's and 90's in the old copper pipe. I have two ways of doing this, which is better.

1. Can I use a PVC coupling to the current 3 inch copper pipe or
2. Do I use a rubber coupling to the New PVC to Copper piping.

Basically which will hold the joints better, a PVC coupling to Copper with PVC prime and adhesive or the Rubber coupling.

Old 07-06-04, 02:00 PM
Mike Swearingen's Avatar
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Use the neoprene rubber coupling (universally called a "Fernco", which actually is a brand name) and they're to code. Trying to glue a PVC coupling to copper wouldn't hold.
Good luck!

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