I'm reworking the DWV in the basement of my 1969 split level for my laundry room. I'm tapping into what was a 4" cast iron floor drain.
I would like to use a mission coupling to tie in my new 4" PVC, but due to space constraints, the only place I could cut into the existing cast iron was the horizontal leg of the old trap. Surprisingly, the cast seems incredibly strong for its age and being underground and wet for 50 years.
My concern is that due to the way the trap was cast, the wall thickness on the top of the pipe is thinner than the bottom where the weir of the trap was located. (1/8" vs. 3/16").
I suppose the only other option would be to remove the remaining cast and use a donut (not a fun venture considering this is 30" under my basement floor). Will a mission be okay on here? I'd appreciate any advice on this. Thanks!
I would like to use a mission coupling to tie in my new 4" PVC, but due to space constraints, the only place I could cut into the existing cast iron was the horizontal leg of the old trap. Surprisingly, the cast seems incredibly strong for its age and being underground and wet for 50 years.
My concern is that due to the way the trap was cast, the wall thickness on the top of the pipe is thinner than the bottom where the weir of the trap was located. (1/8" vs. 3/16").
I suppose the only other option would be to remove the remaining cast and use a donut (not a fun venture considering this is 30" under my basement floor). Will a mission be okay on here? I'd appreciate any advice on this. Thanks!