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Couldn't find anything so just replaced the whole lot. Was tricky due to the waste pipe exiting the wall quite high up, couldn't fit a p trap with a connection for washing machine for example as it was too tall so had to swap it out.
Not sure the washing machine should drain where it does but its where it was before. If anyone has any suggestions..
At least everything slopes now
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They both look odd. I thought the left one was a trap then I read your description.
Right hand - 'directional T joint waste' throws up some operationally similar items.