Not sure exactly how to connect to the 4" cast soil pipe that the house has, but, as the title says, I'm trying to connect a 1.5" or 2" tub drain to the 4" cast pipe (that's been in place for many, many years, and is pretty crusty). Any recommendations on a good sol'n to this?

Thanks,
Jeremy

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Originally Posted by jer0177

Not sure exactly how to connect to the 4" cast soil pipe that the house has, but, as the title says, I'm trying to connect a 1.5" or 2" tub drain to the 4" cast pipe (that's been in place for many, many years, and is pretty crusty). Any recommendations on a good sol'n to this?
Thanks,
Jeremy

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Hi Jeremy,
First you must take a set of ratchet chain cutters and cut out the cast iron closet bend. Depending on where you want the shower drain to go you are now free to use a No-Hub band or a neoprene coupling to join a 4 X 2" ,( not 1 1/2") PVC reducer to the end of the cast iron and do the rest of the conversion in PVC. Good luck, Tom

The closet flange and pipe leading to the stack is (was) copper, and it looked like it was sealed in place with some sort of fiber, but it was loose and slid right out when tugged (possibly a result of breakng up the 4" of concrete that was the floor), so all I'm left with now is the hub at the sanitary Y on the 4" cast stack. How can I join to that? Should I slide the copper back in (how would I seal it?), and use the 3" to 2" neoprene boot that I've already got? (picked up a small assortment of things to try to do this, then the copper 3" line came out, and now I'm stuck)...

Thanks!

Jeremy

Quote:

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Originally Posted by jer0177

The closet flange and pipe leading to the stack is (was) copper, and it looked like it was sealed in place with some sort of fiber, but it was loose and slid right out when tugged (possibly a result of breakng up the 4" of concrete that was the floor), so all I'm left with now is the hub at the sanitary Y on the 4" cast stack. How can I join to that? Should I slide the copper back in (how would I seal it?), and use the 3" to 2" neoprene boot that I've already got? (picked up a small assortment of things to try to do this, then the copper 3" line came out, and now I'm stuck)....
Thanks!
Jeremy

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Leave the copper out. The cast Iron hub is 3"? You have several options here. You can hire a plumber to pour a lead and okum joint and lead in a short piece of 3" cast iron and connect your boot to that or purchase a 3 cast iron X 2" to PVC "rubber" gasket to go in the hub. You can then bevel and grease the end of the 2" PVC to push into the gasket. Your choice!
Go for it. Tom