Back to blog
Article
How to Move the Toilet Drainage
Admin September 21, 2026
Moving the toilet drainage can be achieved by installing a drain shifter, but it is essential to strictly follow operational guidelines and assess potential risks.

I. Preparing Tools and Materials
- Drain Pipe: Shorten the drain pipe to the appropriate length based on the actual shifting distance, ensuring tight pipe connections.
- 110 Pipe Gasket: If the original pipe is a 110-type PVC pipe, use a matching gasket to seal the interface; if it is an old iron pipe, remove the original gasket to fit the new pipe.
- Upper Drain 110 Elbow: Used to change the direction of the drainage, it must match the size of the toilet drain outlet (usually a standard 110mm diameter).
- Auxiliary Tools: Include a saw (for cutting pipes), a level (for calibrating drainage slope), sealant (to prevent leaks), etc.
II. Installation Timing and Conditions
- Construction Phase: The shifting operation must be completed before laying floor tiles to avoid damaging the ground structure later.
- Drainage Slope Requirements: The longer the shifting distance, the greater the drainage slope required (generally, a slope of no less than 2% per meter is recommended) to ensure smooth sewage discharge. For example, when shifting by 1 meter, the end should be at least 2 centimeters lower than the starting point.
- Space Limitations: Ensure that the distance between the shifted pipe and walls or other facilities meets safety regulations (usually not less than 10 centimeters) to avoid affecting subsequent maintenance.
III. Operational Steps
- Removing the Original Drain Outlet: Clear debris around the original drain outlet to ensure a flat interface.
- Inserting the Drain Pipe: Vertically insert the shortened drain pipe into the original drain outlet, with a depth exceeding 5 centimeters for a secure fit.
- Installing the Elbow: Connect the upper drain 110 elbow and adjust the angle to direct the pipe toward the target position (such as the toilet installation point).
- Securing the Pipe: Use pipe clamps or brackets to secure the shifted pipe, preventing displacement or shaking.
- Sealing Treatment: Apply sealant or wrap Teflon tape around the interfaces to prevent leaks.
IV. Precautions and Risks
- Clogging Risk: The drain shifter increases the number of pipe bends. Insufficient slope or the use of inferior materials can easily lead to the accumulation of hair and debris, causing clogs.
- Sewage Backflow: An increase in bends may reduce drainage speed, especially during peak water usage periods, potentially causing sewage to backflow into the toilet.
- Impact on Flushing Effect: When the shifting distance exceeds 30 centimeters, it is advisable to choose a direct-flush toilet or increase the flushing force to compensate for the increased pipe resistance.
- Compliance Check: Some regions have strict regulations on drainage shifting. Consult property management or relevant authorities before construction to avoid illegal modifications.
Summary: Shifting the toilet drainage requires a comprehensive assessment of distance, slope, materials, and toilet type. It is advisable to prioritize short-distance shifting (recommended not to exceed 50 centimeters) and regularly check the pipe's smoothness to reduce long-term usage risks.
Related




