How to Bend a Back to Back 90: Mastering the Art

When it comes to plumbing, being able to bend a back to back 90-degree angle is a crucial skill to have. A back to back 90 is used when two pipes are close together and need to be connected in a tight space. While it may seem daunting, with the right tools and technique, anyone can master the art of bending a back to back 90.

Tools and Materials

Before beginning the bending process, it is important to gather all necessary tools and materials. Here are the items you will need:

  • Pipe bender
  • Pipe cutter
  • Measuring tape
  • Marker
  • Protective gloves
  • Safety glasses
  • PVC pipe

Ensure that you have all of these items before starting your project to avoid any unnecessary interruptions.

Preparing the Pipe

Once you have gathered all necessary tools and materials, it’s time to begin preparing the pipe:

  1. Measure the length of the pipe needed for installation and mark it.
  2. Cut the pipe to the appropriate length using the pipe cutter.
  3. Using the marker and measuring tape, mark the point where you will begin the bend.
  4. Ensure your protective gloves and safety glasses are on.

Bending the Pipe

Now it’s time to begin bending the pipe. Follow these steps:

  1. Insert the pipe into the pipe bender until the marked point lines up with the bending point on the bender.
  2. Using one hand to stabilize the pipe, use the other hand to pull down on the bender’s handle.
  3. Bend the pipe slowly, keeping your hands steady and making sure the pipe remains in place.
  4. Stop bending when the pipe reaches the desired angle. In this case, 90 degrees.
  5. Remove the pipe from the bender.

Make sure to inspect the pipe for any cracks or deformities before moving on to the next step.

Creating the Back to Back Connection

With the pipe now bent, it’s time to create the back to back connection:

  1. Place the two pipes to be connected next to each other.
  2. Measure and mark the point where each end of the bent pipe will connect to each of the two pipes.
  3. Cut the two pipes where they are marked.
  4. Insert the ends of the bent pipe into each cut pipe, creating a back to back connection.
  5. Use PVC pipe adhesive to ensure a strong and secure connection.

Again, make sure to inspect the connection for any potential issues before considering the job complete.

Tips for Success

While these steps should help ensure a successful bend and connection, there are a few additional tips to keep in mind:

  • Be sure to keep the pipe steady while bending to prevent kinks or deformities from forming.
  • Take your time and go slow to ensure a clean and accurate bend.
  • Practice on scrap pieces of pipe before attempting the real thing to get a feel for how the bender works.


Bending a back to back 90 may seem intimidating at first, but with proper preparation, technique, and practice, it can become a simple process. By following these steps and tips, you will be well on your way to mastering the art of bending a back to back 90.


  • What is a back to back 90?
  • A back to back 90 is a type of pipe fitting that is used to connect two pipes in a tight space. The pipes are connected at a 90-degree angle.

  • Why is it important to wear safety gear when bending pipes?
  • Wearing protective gloves and safety glasses can help prevent injury from sharp edges or flying debris while cutting and bending pipes.

  • What if I make a mistake while bending the pipe?
  • If you make a mistake while bending the pipe, simply cut it down and start over. It’s better to take your time and get it right the first time, rather than rushing and potentially causing damage.

  • Can I bend pipes without a pipe bender?
  • It is possible to bend pipes without a pipe bender, but it can be difficult and time-consuming. It is highly recommended to use a pipe bender to ensure accurate and easy bends.


  • DIY Plumbing: How to Bend Pipe. (2021, February 12). Retrieved from
  • How to Bend PVC Pipe. (2021). Retrieved from
  • How to Use a Pipe Bender. (2021, February 12). Retrieved from

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