find out the total head loss between points in a pipe system.
Water (50°F) flows at 250 gpm through the pipe system at the bottom of this page. All piping is four inch (4") diameter cast iron. The distance between points A and B along the open flow path is 500 ft. compute the total head loss between points A and B. presume A and B are at the same elevation. Utilize the following minor loss coefficients for the fittings:
Fitting Minor Loss Coefficient Open Valve 0.20
Fitting Minor Loss Coefficient
Open Valve 0.20
90° Smooth Bend 0.35 (r/d = 1)
0.19 (r/d = 2)
0.16 (r/d = 4)
0.21 (r/d = 6)
0.28 (r/d = 8)
0.30 (r/d = 10)
Tee 0.6 (Straight-through flow)
1.8 (Side-Outlet Flow)
90° Elbow 0.30