Thanks everyone for your help it worked (so far anyway) .
I think it was leaking from both ends the Bush nut looks like it's been leaking and the tiny o-ring on the other part disintegrated when I pulled it out .
Thanks again
Hi sorry to be a pain but I've just received another bush nut from ebay and its the same as the original part that was missing the white plastic insides!.
Could I be missing something
Just a quick update. When I got up this morning there was a drip of water on the valve . I had a sniff and it smells chemically, it's certainly not fresh water .
I might just change both ends to be sure . Thanks again everyone
Good evening.
My elderly baxi 105e drips from between the pressure differential valve and the Bush nut that connects it to the rest of the diverter valve. I think it only happens when I'm using hot water.
Any ideas what to replace?