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Jan 18, 2024
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Nunhead
Member Type
DIY or Homeowner
Hi, grateful for any advice

I need to connect a dishwasher waste water outflow pipe 25mm to 50mm waste pipe.

Is there a joining piece anyone can recommend? Maybe with some appropriate tape.

The waste pipe is in the wall but was trimmed at some point (unnecessarily) to only 10mm extruding from the wall. The last join was faulty leading to a trickle of water and damage to the wall.

Apologies for the grim photo.
 

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Any ideas on this gratefully received.

Would it be a hoop? In combination with some kind of specialist plumbers tape?

If the pipe needs re-installing am willing to get it done properly.
 
Thanks for answering, Shaun. I don't know for certain - do you need to know this to answer the other question about the type of pipe connector suitable?

Yes as you could contaminate ground water etc if it just goes into the ground
 
Yes as you could contaminate ground water etc if it just goes into the ground
Okay well I'm not an expert but we lived there for some time and it was all fine - it seems like the pipe goes through the wall then down to the collective pipes to the main drain - not the ground. I hope that satisfies your waste water question.

Directing our attention to the original question - assuming the outflow is ending up in the right place - what is the connect plumbing piece to connect a 25mm outflow pipe with a 45/50mm (not sure) waste water pipe?
 

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