We have a system which has a very high pressure pump moving 2,500 gal/min through a 10" aluminum pipe, raise 10' and then open to atmosphere. This system has a junction 50' from the pump, then junctions every 660'. We have a piece of equipment which has a 1" injection line (45* injection), we need to know the required injection pressure in order to flow 15 gal/min into the line at various places throughout the line. Additionally, we will need a calculated value of what the pressure in the 10" line should be at the injection point as a validation.