Removed a sink and want to keep using the waste inlets for dishwasher

[chrissy_a]

So I have something like this and currently there is no sink connected so the top part is open. Until I fit the new sink I want to be able to continue to use the dishwasher but I imagine there is potential of some waste coming out through the top. The diameter of the thread inside the connector (the spinning part) is roughly 45mm and I can't find anything which would screw into this and seal off the gap. Is there any product which will do this job?

 

[oldbuffer]

Have a look at https://www.tek-tanks.com/product/trudesign-1-1-2-bsp-blanking-plug/

 

[chrissy_a]

Thanks @oldbuffer !

Seems strange that it's not available in any of the more mainstream DIY stores

 

[JimCrow]

One of these in the top of the trap with a cutting of waste pipe, do not use a blanking plug there as previously suggested.

 

[chrissy_a]

One of these in the top of the trap with a cutting of waste pipe, do not use a blanking plug there as previously suggested.

View attachment 333023

But that's still an open hole?

 

[oldbuffer]

I was wrong. If you still intend to use the dishwasher, then as JimCrow suggests. Otherwise there is no air flow into the drain and the dishwasher won't empty properly. A bit of waste pipe in the top vertically to the level of the old sink waste would be fine.

 

[chrissy_a]

One of these in the top of the trap with a cutting of waste pipe, do not use a blanking plug there as previously suggested.

View attachment 333023

Did the trick, thanks