The system shown in the diagram consists of 1200m of cast-iron pipe with an internal diameter of 5cm (roughness of 0.00015 ft), two 45o and four 90o long radius elbows, a fully open bevel seat globe valve, and a sharp exit into a reservoir. If the elevation difference between the inlet and level in the reservoir is 10m, what gauge pressure is required at point 1 to deliver 0.005m^3/s of water at 20oC into the reservoir (use density of 998.2 kg/m^3 and a viscosity of 0.001002 Pa s)?

ANSWER = 2681 kPa