I believe that I read something in here earlier about this issue, although I'm not sure if it applies exactly to my situation.

My main soil stack is abs. The toilet soil pipe is in question feeds through to the basement, where this 3" connection feeds into the main soil pipe. The toilet ABS pipe was recently replaced with PVC pipe which now feeds into the main soil pipe (ABS) via the ABS sanitary tee (part of the main soil pipe). The main soil pipe is tight against the basement wall, so that a Fernco-Neoprene sleeve and metal band connection, was not available. I know that the "Fernco" connection is the preferred method to connect 2 dissimilar plastic pipes. My township inspector told me that either the "Fernco" connection or the use of "transition cement" is an approved method of connecting PVC to ABS in our township.

The installation of the PVC pipe to the ABS joint was beautifully done. My questions are:

1. I am unsure of the cement used to join the two dissimilar pipes. However, if "all purpose cement" was used instead of "transition cement", should I have the connection re-done with transition cement/ There is no "run off" of green or any other color glue onto the pipe as an indication.

2. If it is not "re-done", then practically speaking, what is the downside to leaving it "as is"? I know that the expansion rates of ABS and PVC differ, but the "union in question" is in a dehumidified and adequately insulated basement. Does this matter? (practically speaking).

Please do not misunderstand me. I know that codes are in place for a reason, and if the "all purpose" cement was used and the consensus is to re-do with transition cement, then I will have it re-done.

For purposes of this discussion, please assume that the "all purpose cement" was used in the joining of the PVC to ABS, as I would like to know the answer for future projects. I will speak with the installer after I read what 'Terry's People" have to say.

Thank you in advance for your assistance.

Sincerely,

Greyhound1