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DeerValley Blog

A complete guide to installing a one-piece toilet (Type A)

by yuwei 14 Oct 2025

Have you considered upgrading your bathroom with a sleek and modern one-piece toilet? Don't worry! Today we'll guide you step-by-step through the installation of a one-piece toilet, making it a hassle-free experience. Let's get started!

1. Check dimensions

Before buying a toilet, make sure you measure the available space in your bathroom correctly. Check the following dimensions:

  • Rough-in distance (distance from the toilet flange to the wall)

  • Central axis between toilet flange and water drain on the floor

  • Height of the toilet flange from the floor

2. Check parts

After purchasing your one-piece toilet, check that all necessary accessories are included. Make sure you have floor bolts, wax rings, an L-bar, and installation instructions. A complete set is essential for a smooth installation.

3. Install ground bolts and L-bar

First, attach the floor bolts to the toilet flange and align them correctly. Ensure that the two bolts and the center of the flange are in a straight line. Then:

  • Place the L-bar, washer, and nut in the correct order.

  • Extend the L-bar to its maximum length and tighten the nut.

It is important that the L-bar remains straight.

4. Install wax rings

Now it's time to install the guard ring. Adjust the L-bar if necessary, ensuring it remains straight. Then follow the manufacturer's instructions to securely attach the L-bar.

5. Place the toilet on the flange

With the wax ring installed, carefully place the toilet onto the flange. Tilt the toilet slightly back and forth to press the bowl firmly onto the wax ring and flange. Then:

  • Insert screws into the plastic sleeves

  • Screw the screws into the two small holes on the side of the toilet.

  • Tighten with a Phillips screwdriver and attach caps.

6. Complete the installation

Finally, connect the flexible water supply hose (not included) to the shut-off valve. Then, perform a flush test to ensure there are no leaks. Congratulations! You have successfully installed your one-piece toilet.

With this step-by-step guide, you can effortlessly upgrade your bathroom with a stylish, functional, and efficient one-piece toilet. Enjoy the comfort of your new upgrade and feel free to share your experience with us! Remember to consult a professional installer if you have any questions or problems. Good luck with your toilet installation!


Related products:

  • DeerValley DV-1F52626 Concord, comfortable seat height, 1.28 GPF, water-saving one-piece toilet (including seat)

  • DeerValley DV-1F52813 Liberty, Dual-Flush, One-Piece Toilet (incl. seat)

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