Urine Tray
The urine tray is the heart of a kiwi bog. As you can imagine measurements must be precise for it to effectively do its job. The faeces hole may appear too small but is in fact more than sufficient.
It has one large
hole through which faeces fall
and another at the end of a tapered
funnel through which urine passes. This second urine funnel is tapered to fit
directly into 32mm flexible sewerage grade pipe
(Hepo Smooth Bore Flexi Waste
FBP3 32mm). It is most important to use flexible pipe at first and then only
join to more rigid pipe after some distance otherwise the funnel may be damaged
or split by the pressure applied to it.