AdrianMariano
New Member
I'm replacing a cracked utility sink. The drain line for this sink is either copper or steel connected into cast iron. (There is a big T-fitting on the cast iron.)
In order to make a connection for the new sink I would like to connect a plastic pipe to the cast iron. Now I could do it using a fernco---just leave some of the existing copper/steel intact---but this does not seem like the best solution. In three other places where this situation has arisen in my house, a direct connection between plastic (ABS in two cases, PVC in one case) has been made at the cast iron fitting.
But when I search around for information on how to make such a joint I come up empty and I see lots of advise to use clamps. How can I connect plastic piping directly into the cast iron? Is there some reason why ABS would be preferred for this? (In both cases where ABS was used it is a short section that makes a transition to PVC, like PVC is preferred but there's some reason not to use PVC at the cast iron-plastic junction.)
In order to make a connection for the new sink I would like to connect a plastic pipe to the cast iron. Now I could do it using a fernco---just leave some of the existing copper/steel intact---but this does not seem like the best solution. In three other places where this situation has arisen in my house, a direct connection between plastic (ABS in two cases, PVC in one case) has been made at the cast iron fitting.
But when I search around for information on how to make such a joint I come up empty and I see lots of advise to use clamps. How can I connect plastic piping directly into the cast iron? Is there some reason why ABS would be preferred for this? (In both cases where ABS was used it is a short section that makes a transition to PVC, like PVC is preferred but there's some reason not to use PVC at the cast iron-plastic junction.)