ᐅ Extending a Drain Pipe with an Elbow – Potential Issues?

Good evening,

I have a question that I haven’t been able to find an answer to. Due to our existing kitchen and the wall connections in our house, I need to extend the drain by 1.5 m (5 feet). I know the pipe requires a slope of at least 1-2%. Unfortunately, there is both an electrical outlet and the water connection in the way of the pipe. I have tried many different configurations.

The only option I have currently found is this: The pipe comes out of the wall and first goes down at a 45° angle for about 15-20 cm (6-8 inches), then goes upward toward the sink. Now my question is: Is this downward bend a problem? Or is it simply not allowed? I would appreciate any feedback.

So would wastewater always remain in the lower part? The joints would not stay permanently sealed, so problems are inevitable. What you could do is install a 50mm (2 inch) flexible pipe or hose in the section where water accumulates to avoid any connection points there. However, this would also be an absolute last resort, as food residues and other debris would build up in that area.

Yes, exactly. That’s a pity... but I kind of expected it.
Now it’s going to be difficult because I don’t know how to create a slope :-(
Well, I’ll keep thinking about it.

Hello

Why don’t you expose the sewer pipe a bit further to then connect it at a deeper position?



Olli