Cody Casey
Connecting a toilet pan to a soil pipe is a common plumbing procedure. It is possible to connect a new toilet to an existing soil pipe, and this can be done by refitting the new toilet where the old one was. However, it is important to ensure that the measurements are correct, especially if there is more than one toilet in the house. There are various types of connectors available, such as flexible connectors, rigid pan connectors, and plastic pipe connectors with rubber seals. It is also important to consider the angle and length of the connector, as well as the type of toilet and soil pipe.
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What You'll Learn
Measure pipe and cut accordingly
Before you start connecting your toilet pan to the soil pipe, you need to measure the pipe and cut it accordingly. This is an important step as it ensures that your new toilet will fit nicely into the existing soil pipe.
First, measure the distance between the soil pipe and the new toilet's flange. Take into account any offsets or bends that may be present in the pipe. It is crucial to get accurate measurements to ensure a proper fit. If you are connecting multiple toilets, ensure that you are not fitting a second toilet on the same horizontal section.
Next, using a pipe cutter or a hacksaw, cut the soil pipe to the measured length. If you are cutting a cast iron soil pipe, consider renting a specialised soil pipe cutter. When cutting, leave enough pipe protruding from the wall to attach a coupler. Also, ensure that you cut the pipe straight and clean to facilitate a good connection.
Now that you have measured and cut the soil pipe, you can proceed to connect the toilet flange using a push-fit connection. Remember to add a slip coupling to the soil pipe at the end where the main stack is located. This will help create a secure joint between the soil pipe and the toilet flange.
By following these steps, you can ensure that your soil pipe is properly measured and cut, setting a strong foundation for the rest of the installation process.
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Add a slip coupling to the soil pipe
Connecting a new toilet to an existing soil pipe is a straightforward process. However, it is different if you have more than one toilet in your house. Before you begin, ensure that you are not fitting a second toilet on the same horizontal section as another.
First, measure your toilet's new flange and cut your pipe so that it fits. Then, add a slip coupling to the soil pipe at the end where the main stack is. Next, connect the flange on the opposite end using a push-fit connection. Slide the slip coupler up so that it connects the soil pipe to the new toilet's flange, and then seal both ends with more slip couplings.
Slip couplings are designed for situations where there isn't enough room to pull the pipe far enough apart. They allow you to offset the pipes and slide the coupling onto one side, line up the pipes, and then push the coupling back onto the other pipe.
If you are uncomfortable with DIY jobs, consider contacting a plumber to help you with the installation.
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Connect the flange using a push-fit connection
Connecting a new toilet is simple, especially if it's the only toilet in the house. However, if you have more than one toilet, ensure that you are not fitting a second toilet on the same horizontal section as another. Before connecting the flange using a push-fit connection, you must measure your toilet's new flange and cut your pipe accordingly. Then, add a slip coupling to your soil pipe at the end where the main stack is.
Push-fit connections are universal pipe fittings that can be installed without the use of special tools. A mechanism inside the fitting locks the pipe using pressure inside the plumbing system. There is no need for soldering, crimping, or gluing. This type of fitting is also called a push-fit, push-in, or push-fit connector. Sharkbite is the most popular brand of push-to-connect fittings on the market.
To connect the flange using a push-fit connection, first identify the type of fitting. Common pipe fittings include speedfit fittings, brass fittings, copper fittings, and John Guest fittings. Then, clean the end of each cut pipe with a rag. It must be smooth and free of old solder or other materials. If you cut the pipes with a hacksaw, file off any rough edges before cleaning. If necessary, you can smooth rough surfaces with emery cloth, but be careful not to sand down the pipe. It should have its original roundness and diameter to ensure a proper seal with the push-to-connect fitting. Measure from the end of each pipe and make a depth marking, as directed by the push-to-connect fitting manufacturer. The mark will tell you when the fitting is pushed on all the way, which is essential for a proper seal.
Insert the fitting into the pipe at the insertion point. Ensure that the fitting is snug and secure. Turn on the water and double-check your connection, then turn off the water. Push-to-connect fittings can be temporary or permanent. Most include a release feature that allows you to remove the fitting with a special tool, which is usually a simple plastic device that you push against the fitting to depress a release collar and slip off the fitting. Always use the manufacturer's tool to remove the fittings.
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Seal both ends with slip couplings
Slip couplings are used to seal both ends of the pipe when connecting a new toilet to an existing soil pipe. This is a crucial step to ensure that the pipe is secure and doesn't leak. Here's a detailed guide on sealing both ends with slip couplings:
First, it's important to understand what slip couplings are and why they are used. Slip couplings are short pipe fittings with a removable centre section, allowing them to slide over the ends of two pipes for easy connection. They are designed to create a watertight seal, preventing leaks at the joint.
Before you begin, ensure that you have the correct size and type of slip couplings for your specific pipe dimensions and material. You may need to measure the pipe's diameter and length to select the appropriate size of slip couplings.
Now, let's walk through the process of sealing both ends:
- Prepare the Soil Pipe: Cut the existing soil pipe to the appropriate length, ensuring you leave enough pipe to attach the slip couplings. It is crucial to cut the pipe cleanly and at the correct angle to facilitate a secure connection.
- Add the First Slip Coupling: Take one of the slip couplings and slide it onto the end of the soil pipe. Make sure it is pushed firmly into place, creating a snug fit. You may need to apply a suitable sealant or adhesive to ensure a watertight connection, depending on the type of pipe you are working with.
- Connect the Toilet Flange: At this stage, you will connect the toilet flange to the opposite end of the soil pipe. This is typically done using a push-fit connection, creating a secure and removable joint. Ensure that the flange is properly aligned and securely attached before proceeding.
- Slide Up the Second Slip Coupling: Take the second slip coupling and slide it up towards the connection between the soil pipe and the toilet flange. Ensure that it covers the end of the soil pipe and securely connects to the toilet's flange. Again, you may need to use a suitable sealant or adhesive, depending on the materials involved.
- Test and Secure: Once both slip couplings are in place, carefully inspect the connections to ensure they are secure and watertight. Give the assembly a gentle test to ensure it doesn't leak or shift. If needed, you can use galvanised strapping to provide additional security and prevent the couplings from shifting or being pulled out.
By following these steps, you will effectively seal both ends of the soil pipe with slip couplings, creating a secure and leak-proof connection between the soil pipe and the new toilet. Remember, if you're unsure or uncomfortable with any part of this process, it's always best to consult a professional plumber who can guide you through the installation or provide advice tailored to your specific situation.
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Use galvanised strapping to secure the flexi
When connecting a toilet pan to a soil pipe, you may encounter issues with the flex connector protruding too far and not being able to make a tight turn. In this case, you can use galvanised strapping to secure the flexi so that it doesn't get pulled out when the toilet is removed.
Galvanised steel strapping is a flexible material made from steel with a zinc coating. It is known for its superior strength and flexibility, making it ideal for securing heavy loads without breaking. The zinc coating improves corrosion resistance and durability compared to untreated steel.
To use galvanised strapping to secure the flexi, follow these steps:
- Measure the length of the flexi connector and cut the galvanised steel strapping to an appropriate length. Ensure that the strapping is long enough to wrap securely around the flexi.
- Wrap the galvanised steel strapping tightly around the flexi connector.
- Seal the strapping to itself. This can be done using a hammer, or for thicker strapping, you may need to use a joint notch, seal and crimp, or weld it together.
- Ensure that the strapping is tightly cinched and knotted to prevent it from loosening or becoming work-hardened.
- Check that the flexi connector is securely held in place and cannot be pulled out.
By using galvanised strapping, you can securely connect the toilet pan to the soil pipe, ensuring a safe and durable installation.
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Frequently asked questions
You can use a flexible connector or a rigid pan connector. First, measure your toilet’s new flange and cut your pipe accordingly so that it’ll fit in nicely. Then add a slip coupling to your soil pipe at the end where the main stack is. Next, connect the flange on the opposite end using a push-fit connection. Finally, slide the slip coupler up so that it connects the soil pipe to the new toilet’s flange, and then seal both ends with more slip couplings.
If you are using a flexible connector, you can cut a 6cm length of soil pipe and shove that in first. You can use galvanised strapping to secure the flexi so it can't be pulled out when the toilet is removed. If you are using a rigid connector, you can use washing up liquid as a lubricant.
You might find that the connector is not flexible enough or that it cannot turn at an acute angle. You might also find that the flex connector protrudes too far and can’t make the tight turn acutely enough.
