PVC pipe joins to cast iron pipe with a flexible rubber coupling.
Cast iron sewer pipe used to be installed in homes, along with lead and clay pipes, and it's still accepted by building code in many areas. Today, however, PVC is the most commonly installed type of sewer pipe. If a section of existing cast iron pipe is to be replaced with PVC pipe, the two different pipes join together with a flexible rubber coupling, which creates a watertight seal. Does this Spark an idea?
Instructions
1. Measure the section of PVC pipe and mark it at the point where it needs to be cut. Make a straight, perpendicular cut through the pipe at the mark using a handsaw, circular saw or miter saw. Scrape off any plastic burrs from the pipe end using a utility knife or sandpaper.
2. Wet the outside end of the existing cast iron sewer pipe, as well as one end of the PVC pipe. Push a flexible rubber coupling half way onto the end of the cast iron pipe. Push the wet end of the PVC pipe into the other end of the rubber coupling -- the coupling is now halfway on the cast iron pipe, and halfway on the PVC pipe.
3. Tighten the metal hose clamps surrounding both ends of the rubber coupling with a screwdriver or ratchet. This will create a watertight seal between the two pipes.
Tags: rubber coupling, cast iron, iron pipe, cast iron pipe, flexible rubber, flexible rubber coupling