Question mark or right angle soil pipe?

[John Smith Esq.]

Hello,

Had toilet installed in new ensuite. All fine apart from even after a couple of flushes, there can be little sediment bits of **** in the pan and these sometimes don't shift after multiple flushes, like they come back and settle after the flush has stopped and water has settled. It is weird because the flush shifts the main load, like 99.9% but something is causing these little tiny bits to not clear and somehow drift back. It is unsightly to see this and is unacceptable.

Flush is set to max 6L. There is no problem with water supply and no sediment in tank. The problem bits are ****.

We don't know if it's the design of the flush and bowl or something else. The plumber is good and has done everything properly and used proper branded parts.

So it could be the toilet and I've noticed that the flush does have an unbalanced design with a lot coming out at the back of the bowl in a waterfall effect but not much around the bowl. So maybe the **** is getting smashed up and the pattern of water flow isn't quite right for moving little bits? The water level in pan does rise a few inches as flush is going in and this doesn't happen in my other toilet.

Or, could it be the soil pipe? It is a McAlpine question mark one that goes off to the side horizontally and then through a wall to the side of the toilet. It includes that concertina stuff after question mark.

So anyway, to save wasting time, I'm thinking to cover off both possibilities. Replace the toilet and change the connector type as well. if we pull toilet a bit further off the wall, we could replace the question mark with a right angle one. My question is: is this likely to help, all things being equal for the problem I'm having? I.e. are right angle soil pipes better than question marks?

 

[Hugh Jaleak]

90º Pan connector would be infinitely better I think than a ? type in the horizontal plane, especially if it s flexi type. Solid matter can sit in the creases of the flexi, as as you've found out, causes issues.

Flush should be fairly even around the bowl, you are relying on the action of the water to clear the contents of the pan and wash them out and away. Check Pan is level on both planes, if it's tilting in one direction that can affect the flush performance.

 

[John Smith Esq.]

Thanks for the response. Very helpful, especially about the concertina pipe. Thinking about it, the last part of the flush water has to fall back into the pan and any bits in crevices could be pulled back... this might be the problem here.

Because I need to keep projection from wall to a minimum whilst increasing space behind the pan, I'm thinking of going down the cabinet route but need a short bowl. Shortest I can find is 460mm but it is rimless. Do these rimless bowls work well?

 

[JohnD]

You can still buy pans designed to fit the soil pipe in the floor, with no adaptor required, which IME give a satisfactory flush. What is the distance from the centre of the soil pipe to the wall (not to the skirting)?

Some photos or a floor plan would be helpful.

 

[John Smith Esq.]

Floor isn't an option. Soil pipe goes horizontally to the side of the toilet and through an external side wall.