Eva spout flow diagram
Below .75 GPM the flow out of the spout looks anemic.
Between 1 GPM and 3 GPM the flow is relatively well behaved. The water stream is not quite a rain chain ( as with most other well behaved flows) — the water adhering to the bottom lip thickens the water stream as it leaves the edge.
At 5 GPM the stream becomes a bit messy. Small drops of water drip off the bottom edge of the spout and drip down and forward a bit. The amount of drip and the direction may be influenced by the spout finish. There may not be a way to consistently control this
The spout can handle a considerable volume of water. Moving more that 5 GPM should not be a problem.
Spout was plumbed with ¾ in pipe using the supplied bushing. Please be careful when using smaller pipe sizes as the this will change profile.