Thanks all for the suggestions. It would be great if you could post a simple sketch with questions in eng-tips to avoid any confusion. Can this be done? I will post details and success of our modifications to resolve our problem in the next couple of weeks. Thanks again all for your comments.
Thanks RWF437. Yes, my original query relates to an inverted siphon. Logic says it should just flow (subject to friction head equalling the static head difference) because the discharge point is lowerer than the level in the head tank but it does not unless we break the pipe at the low point...
We use gravity flow to transfer leachate (contaminated water) from a tank to an open pond on different elevations. Head difference, between the level in the tank and the dischage pipe end into pond, is 4-6 metres. Horizontal distance bewteen the tank and the pond is about 1000 metres. Pipe...
