Flush pipe pan cone question

[eltel]

Sorry if this is a naive question. Should the flush pipe (45mm) on a Noken Smartline enter into the toilet pan rubber cone from the wider diameter 45mm end as far as the narrower 40mm diameter end or should it extend right through the narrower end further into the pan ie with the cone fins “swept back” as it is inserted. Or is the cone fitted the other way round. ( I said it was a naive question!)
Thanks

 

[Madrab]

The former - it should sit inside the cone up to the narrower stop, then the whole cone slides into the flush pipe aperture on the toilet tight up to the last fin.

 

[eltel]

@Madrab thanks very much for your reply.

One more question if I might - should the cone be insterted into the pan first and then the pipe inserted into the cone once fitted into the cistern down pipe or should the pipe and cone be assembled and inserted together? The flush pipe has a lip about 25mm from one end I assume that goes at the cone end? Very many thanks again.

 

[Madrab]

I always fit the cone onto the pipe and then whole thing into the pan. Doing it the other way can push the cone into the pan before the flush pipe is all the way home. You want to avoid using anything to lubricate the cone or opening as that can allow it to draw itself back out over time. If anything, then of all thing, some saliva on your finger into the flush hole just to help it. Make sure both are super clean and the flush pipe length is spot on.

Not sure what you mean about a lip on the flush pipe, it's normally just one piece of pipe with a long radius bend, sometime one end is 2" dropping to 1 1/2" at the other. Can you post a pic? It might be the insertion stop for going into the flush valve in the cistern though usually there's a stop inside the shank of the flush valve and not on the pipe, as that then allows the pipe to trimmed.

 

[eltel]

@Madrab

Sorry I meant the horizontal inlet pipe that goes between the curved end of the cistern down pipe and the cone. As per this. Thank you.