Replacing cast iron drain pipe
#1
01-22-07, 08:54 PM
Replacing cast iron drain pipe
The iron pipe has rusted through in spots below the kitchen sink. How can I seperate joints if they are leaded in? How can I join plastic sewer pipe to the old cast iron pipe?
OWS in Seattle
OWS in Seattle
#2
01-26-07, 11:58 AM
Cast iron pipe can be cut with a Sawzall, although that can be a real pain to do, especially in tight places. One can also use a pipe cutter with a cutting wheel and 4-roller versions are made that can cut pipe with only a little more than 90 degree movement in tight places. These can be rented; ask for a 4-jaw pipe cutter. Pipe can also be broken with a chain-type device that wraps around the pipe and tightens until fracturing the pipe, and are rentable as well. As far as I know, you just bust out old cast iron pipe with sledge hammers, etc., but do make a cut first where you want to stop and adapt to plastic pipe. Rubber FERNCO couplings are made to adapt cast iron to conventional PVC pipe.
#3
01-26-07, 12:38 PM
Thanks for the input on Fernco fittings.
If I could separate the joint (lead) I could probably fit a plastic soil pipe into the cast iron. How do I clean out the joint without burning the house down?
If I could separate the joint (lead) I could probably fit a plastic soil pipe into the cast iron. How do I clean out the joint without burning the house down?
#4
01-28-07, 06:56 AM
fire
you don't. a no hub or or rubber coupling is the only "approved" connection to transition from cast iron to another type of pipe. there is a reason for this. i have at times been able to crack off the outer pipe to make a connection but as you have found out after to clean off the lead its not worth the effort. just cut it off and re-run it.
