Yes great package @chuongmep thanks 
more and more my favorite for mep…
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Thanks @chuongmep it’s a very clever script, it’s worked well to find duplicates for system families (in some rare cases it doesn’t work, it finds the pipes but is not a duplicate, is a clash):
How it works your python script? It gets the last index if the point is the same?
Personally, I find the duplicate elements with other software and after coming back to choose which element to delete with dynamo
It’s a great package DynaMEP
Thanks
Cheers