How to Move the Pipe in the Toilet

Moving the pipes in the toilet usually involves relocating the toilet or changing the position of the floor drain pipe. The appropriate method should be selected according to specific needs, and construction specifications must be strictly followed.

Toilet Relocation

• Common Reasons: During bathroom renovations, such as creating a wet-dry separation, when the toilet is too close to the wall, expanding the shower area, or when the toilet faces the door, it may be necessary to adjust the toilet's position.
• Pipe Selection: Priority should be given to using 110mm round pipes. If the height for tile installation is limited, 110mm flat pipes can be used. The overall thickness of a flat pipe is 60 - 70mm, and with a groove cut in the floor, it can avoid increasing the height of tile installation in the bathroom. However, as the diameter of the flat pipe decreases, the risk of blockage increases. Therefore, round pipes should be used whenever possible.
• Construction Points:
  • Slope of Flat Pipe: According to GB50242 - 2002, the slope of an 110mm pipe should be 0.6%–1.2%, meaning the height difference between the two ends of a 1-meter pipe should be 12mm. Accurate control of the slope is crucial to avoid blockages in the later stage, and construction must strictly adhere to the standard.
  • Relocation Distance: The shorter the relocation distance, the better. The longer the distance, the higher the requirement for slope accuracy. As the water flow speed slows down, waste is more likely to deposit. The fewer bends in the pipe, the better. Try to relocate the toilet in a straight line. Each additional 90° bend increases the water flow resistance equivalent to extending the straight pipe by 1.5 meters, and waste is more likely to get stuck at the bends. Toilet relocation within 1 meter rarely causes blockages, provided that no paper, vegetable leaves, or other solid objects are thrown into the toilet.
  • Operation Method: For short-distance toilet relocation, a ready-made relocation device can be purchased. For distances exceeding 20cm, a plumber may need to cut the flat pipe on-site and adjust the slope of the sewer. There are also cases where homeowners want to replace the toilet's water supply pipe. Since the pipe passes through the glass of the shower room and the shower room is close to the toilet, the toilet is moved 5 centimeters to the right to facilitate future replacement of the water supply pipe. When relocating the toilet's sewage pipe, the plumber will cut the sewage pipe, remove the excess part, fit a sealing ring, measure the length, and apply glue evenly.

Floor Drain Pipe Relocation

If the position of the downpipe reserved by the developer is not suitable and you want to install the floor drain elsewhere, you will need a 90-degree elbow, a straight pipe of appropriate length, and a straight tee pipe. First, connect the 90-degree elbow to the original downpipe, then connect the straight pipe, and finally connect the straight tee pipe. Compared to a 90-degree elbow, a tee pipe provides more drainage space and can improve drainage efficiency.