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-   -   PVC flange to ABS pipe? (http://www.diychatroom.com/f7/pvc-flange-abs-pipe-172478/)

Trucon01 02-20-2013 10:39 AM

PVC flange to ABS pipe?
 
3 Attachment(s)
Hi All,

I'm trying to replace my closet flange. I have a 3" ABS pipe with the current flange secured to the outside of the pipe.

Should I cut open the sub floor, cut off the 3" ABS, add a 4" to 3" coupler and use 4" PVC to the floor? That way I can get 4" inside flange...

I ask because I would only be able to use a 3" inside flange which I read wasn't that great.

Jeff

Trucon01 02-21-2013 10:25 AM

Can anyone help? I'd like to stop on my way home from work to get what I need :)

djlandkpl 02-21-2013 11:54 AM

I would not mix ABS and PVC. They have different solvents although there is one that can be used for both.

I don't see the need to use a 4" pipe. The toilet outlet is probably less then 3".

Trucon01 02-21-2013 12:25 PM

Not even a 4" to 3" furco?

TheEplumber 02-21-2013 01:25 PM

Quote:

Originally Posted by Trucon01 (Post 1121728)
Not even a 4" to 3" furco?

Why not a standard 3" female ABS flange?

Trucon01 02-21-2013 01:38 PM

I guess I'm confused on the 3" flange. The current flange is on the outside of the 3" ABS pipe. How would I take off the current flange and just put on the new female?

I assumed I would have to cut the below where the flange sits, then couple the 3" ABS and bring it back up again to tie into the new flange?

djlandkpl 02-21-2013 01:54 PM

Quote:

Originally Posted by Trucon01 (Post 1121766)
I guess I'm confused on the 3" flange. The current flange is on the outside of the 3" ABS pipe. How would I take off the current flange and just put on the new female?

I assumed I would have to cut the below where the flange sits, then couple the 3" ABS and bring it back up again to tie into the new flange?

Yes, that's how I see it. They sell a cutter that attaches to a drill and cuts from the inside. Add a coupler, piece of pipe and flange.

http://www.homedepot.com/catalog/pro...051394_300.jpg

TheEplumber 02-21-2013 02:03 PM

Quote:

Originally Posted by djlandkpl (Post 1121776)
Yes, that's how I see it. They sell a cutter that attaches to a drill and cuts from the inside. Add a coupler, piece of pipe and flange.

http://www.homedepot.com/catalog/pro...051394_300.jpg

Thats the best way. Cut down low, glue on a coupling. Measure what you cut out and adjust the length to allow for any change in floor height, glue in the riser. Repair the floor and add new flange.
That inside cutter is a nice tool. Be sure to stuff a rag down the pipe- I've seen that saw fall out of the drill chuck more then once. You don't want to try and retrieve it from the base of your stack :thumbsup:

Greg761 02-21-2013 02:57 PM

Like Eplumber said. 3" female flange. Aren't you going to have to cut the subfloor out anyway to put a new piece of plywood in that will butt up closer to the flange so you have something to screw it into? 3" flange/pipe is fine especially with today's 1.6 gallon flush toilets. Also, I've never had any problem joining PVC to ABS. I'd rather glue it than use a fernco if you have no future access to it. I do trust fernco's too ......


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