Just make sure the model coupler you're using is designed and rated for CI to PVC. They are different than CI to CI.
Quote:
Originally Posted by oldE
He has already replaced the coupler. His question was about the cast iron pipe.
I didn't know cast iron was still in use for residential in the mid '80s.
If it ain't broke....
Best
Les
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CI is used in better residential construction in vertical applications to reduce noise.