How To Clean A P‐Trap Or U‐Bend: 10 Steps (with Pictures) - WikiHow

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1 Attach the pipe. Place the pipe back in place.
- Remember that the long side faces the sink drain.
2 Fasten back the pipe. Make sure to fasten tight.
3 Check for leaks. Do this by turning on the sink to check if drainage is okay.
- Keep the sink on for 15 seconds.
- If it leaks, make sure it is fastened right. Is the fastener loose? If that is not the case, you may need plumbing tape. You can purchase plumbing tape at a local hardware store. Use the tape as a gasket.
4 Clean up. Empty the bucket out in a drain. Put back the tools.