DerbyDad03 wrote:
I've searched a few plumbing sites, but couldn't find what I was
looking for. Maybe you guys that know the plumbing sites better than
me can help out.

I'm looking for either a 3 1/2" to 1 1/2" rubber expansion reducer for
a cast iron cleanout or a combination of a rubber plug and a PVC
reducer to fit the same. I need to run a 1 1/2" sink drain into the
reducer.

HD carries and 4" to 3" reducer plug and a PVC 3" to 1 1/2" reducer,
but my cleanout is 3 1/2".

The threads on the cleanout are shot so a cast iron plug only catches
the first thread or so. In addition, the bottom of the angled cleanout
is below the concrete slab so the large nut-shape rim of the cast iron
plug that my local parts store carries hits the floor before *any*
threads can catch.

I had a smaller (no large nut-shape rim) 1 piece cast iron reducer
that I had to break out to snake the drain and no one seems to carry a
matching part. I bought that reducer many years ago at the same store
I went to yesterday but they said that parts for 3 1/2" cast iron are
getting harder to find.

Due to the layout of the basement bathroom, extending the cleanout
further into the room with a combination of parts is not a viable
option, so I need something fairly compact.

Any advice would be very welcome.

Would any of these work? What I was actually looking for was a rubber
freeze out plug, but in a larger size.

http://www.newmantools.com/cob/pipeplugs.htm
http://webstore.petersenresources.co...dleexpand.aspx
http://www.shawplugs.com/