Norah bowl flow diagram
The stream at very low flows is rather charming. The water stream is very well behaved and falls cleanly away from lip of bowl.
Would not recommend running the bowl with flows greater than 2 GPM as the water stream looks too large in relation to the bowl.
3 GPM is the absolute maximum flow that the bowl can sustain without overflowing.
Bowl was plumbed with ½ in pipe.