Hi our toilet won't flush and I know someone who's a plumber who popped in to have a look at it. He told me we need a country part and syphon and because I can't get to Plumb Centre during the week he reckons B & Q might have it. I've looked up both these websites but can't find anything with this name. I called the same plumber but he says he's only ever known it by that name. Does anyone know the correct name of this part please?