Connecting PVC pipe to cast iron pipe involves just a few simple steps. Most of the tools you’ll need may already be in your garage!
Update your home with new PVC and start by removing the existing pipe. Use hubless connectors to join PVC and cast iron pipe. Secure the connector firmly with a screwdriver or wrench to prevent leakage.
What You’ll Need
These are the tools you will need to complete this project. If you don’t want to buy something outright, you’ll also find most (if not all) of them at your local tool rental.
Tools Required
An Important Tool You’ll Need For This Project a pipe cutter You can also use a reciprocating saw to cut through old cast iron pipe.
You will also need a hubless connector designed for cast iron pipe. These will help bond the pipes to the PVC.
The last tool you’ll need to finish the job is a Phillips screwdriver or socket wrench. This tool will ensure that the bolts are completely secure and prevent leakage problems.
How to Connect PVC to Cast Iron
Now that you have all the tools you need, let’s get started on the project!
Prepare Work Space
Before lifting the pipe cutter, be sure to clear the space around the pipe. Any obstruction, such as insulation or clutter, could be a hazard while you work.
You will also need to turn off the water supply if you are working on pipes that connect to the water source.
Remove Existing Pipe
If you are switching to PVC due to leaking issues, you will need to cut the existing pipe. Pipe cutters are made for this step, but reciprocating saws will get the job done faster.
Also known as a Sawzall, a reciprocating saw is great for cutting cast iron and PVC.
Connect cast iron pipe to PVC
Once you cut the existing pipe, you can work on joining the PVC. Use the hubless connector to join cast iron pipe and PVC pipe.
Make sure you buy the correct size connectors so they can seal properly. Connectors that are too large will cause leakage problems.
You can always consult a hardware store or professional contractor if you have questions about getting the correct hubless connectors.
Grab your screwdriver Phillips or socket wrench and tighten the bolts to secure the connector. Once the connector is installed, place the PVC pipe completely on the other side of the connector.
Secure the PVC pipe with your screwdriver or wrench. Double check that the bolts are fully tightened and that your pipes are secure! This process will also work for connecting PVC to cast iron sewer pipes.
How to Prevent Leaks
When connecting new pipes, there is always a chance of leaks, especially if you don’t. have experience working with pipelines.
Secure the Connector
When tightening the bolts and securing the hubless connector, be sure to use the right tool for the job.
Make sure your screwdriver or key fits correctly in the connector. Some wrenches, such as a T-wrench, have an indicator that tells you if you’re applying the correct amount of pressure.
Applying too much or too little pressure can affect how well the connector secures. Leaks can be hard to identify, so you’ll want to make sure you’re tightening the connector correctly!
Blocking Leaks
If you’re unlucky with a small leak in your PVC pipe, You can easily use rubber and silicone repair tape to block further leaks. This solution only works for minor leaks – if there’s a major drip problem, chances are you’ll need to replace the entire plumbing.
Final Thoughts
Connecting PVC pipe to cast iron pipe can be a simple project! Please do your research before attempting any of the above steps and take precautions before beginning this project.
Once you complete this project, be sure to check for leaks. You can do this visually by turning the water back on and looking for leaks between the pipes.
Cast iron pipes are more likely to be found in older homes, but can easily be swapped out for newer PVC pipes. PVC pipe will be more cost effective in the long run!
Wear gloves and safety glasses when working with pipe cutters or reciprocating saws. If you ever have any questions or concerns about the process, please contact a professional contractor for help!
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