Hi. I'm trying to determine the flow rates of water in a pipe network. At a junction in a pipe, for example a simple y junction where the water heads out of a tap down a short length of tube before splitting into two lengths of tube of the same diameter, would the head loss equation for one of the outlets be. Total head=entry loss+tap loss+pipe loss 1+loss in connector+pipe loss 2+energy at exit I am pretty confident of this but wondered if I would need to take separate values of U for before and after the junction, in the U^2/2g terms on the right hand side of the equation (as the volumetric flow rate in the pipe changes). Any help would be appreciated.