Plumbing Instructions for Bidet

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Installing a bidet in a bathroom requires tying into the existing plumbing for the toilet and the drain assembly or preparing new lines specifically for a bidet in remodeling or new construction. Bidets appear very much like the bottom bowl section of a standard toilet. They are available at most home improvement or kitchen and bath stores. Installation is similar to that of a toilet, with the use of wax ring seals and standard water supply line tubing.

Things You'll Need

  • Adjustable wrench
  • Small bucket or bowl
  • T-connector
  • Teflon tape
  • Drain line
  • Drain flange
  • Wax ring
  • Screwdriver
  • Turn the water off to the main toilet by turning the small valve located behind the toilet and near the floor. Flush the toilet and reach inside the tank to hold the flapper up so most of the water drains out.

  • Use an adjustable wrench to disconnect the small nut linking the water line valve to the line to the toilet tank. Drain any water remaining in the water line into a small bucket or bowl to avoid having it spill on the floor.

  • Connect a T-connector fitting to the water valve. Wrap the threads of the connector with Teflon tape and hand-tighten it into the valve opening. Tighten it securely with an adjustable wrench with just enough force to feel resistance but not enough to damage the connector or valve.

  • Run a new drain line for the bidet. If it is possible to run a new pipe easily through the floor and connect into the main sewer line, then this is the best choice. In most cases, this will not work, and it will be necessary for the toilet to be fully removed to allow for floor removal and installation of a T-connector in the drain pipe for the toilet.

  • Connect the bidet to the floor drain in the same way as a toilet. Place a wax ring around the opening, and lay the bidet down carefully over this. The weight of the unit will press down into the wax and form a seal. Use the screws already in place in the drain flange to secure the bidet to the floor and drain.

  • Reconnect the drain line to the toilet using one of the connections on the new T-connector. Wrap Teflon tape on the threads prior to installation and connect it tightly with an adjustable wrench. Connect a second line to the other end of the T-connector in the same manner as the toilet line. Attach the other end of that line to the water-in connection on the back of the bidet. Use Teflon tape on this connection as well, and tighten it securely.

  • Turn the water valve back on and check for leaks at all connections. Test the proper operation of the toilet and the bidet to make sure there are no errors or leaks of any kind.

Tips & Warnings

  • Be sure that all water line connections have Teflon tape on the threads to help ensure there are no leaks.
  • Be sure the bidet is seated properly over the wax ring or it will certainly leak.

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References

  • "Ultimate Guide to Bathrooms: Plan, Remodel, Build"; The Editors of Homeowner; 2007
  • "Ultimate Guide to Plumbing: Complete Projects for the Home"; Merle Henkenius; 2006
  • Photo Credit Toilet bowl and bidet in a toilet image by terex from Fotolia.com
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