Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Water flow in steel pipes schedule 80 - pressure drop and velocity diagrams in SI and Imperial units.
The diagrams below indicates pressure drop for water flow through
ASME/ANSI B36.10/19 schedule 80 steel pipes.
The pressure drop calculations are made with the
D'Arcy-Weisbach Equation. Pressure Drop - SI units
1 Pa = 10 -6 N/mm 2 = 10 -5 bar = 0.1020 kp/m 2 = 1.02x10 -4 m H 2O = 9.869x10 -6 atm = 1.45x10 -4 psi (lbf/in 2) 1 liter/s = 10 -3 m 3/s = 3.6 m 3/h = 0.03532 ft 3/s = 2.1189 ft 3/min (cfm) = 13.200 Imp.gal (UK)/min = 15.852 gal (US)/min = 792 Imp. gal (UK)/h 1 m/s = 3.6 km/h = 196.85 ft/min = 2.237 mph Pressure Drop - Imperial Units
Friction Loss Table
Friction loss table in pdf-format.
1 gal (US)/min =6.30888x10 -5 m 3/s = 0.0227 m 3/h = 0.06309 dm 3(litre)/s = 2.228x10 -3 ft 3/s = 0.1337 ft 3/min 1 ft/s = 0.3048 m/s 1 psi (lb/in 2) = 6,894.8 Pa (N/m 2) = 6.895x10 -3 N/mm 2 = 6.895x10 -2 bar = 27.71 in H 2O at 62 oF (16.7 oC) = 703.1 mm H 2O at 62 oF (16.7 oC) = 2.0416 in mercury at 62 oF (16.7 oC) = 51.8 mm mercury at 62 oF (16.7 oC) = 703.6 kg/m 2 = 2.307 Ft. H 2O Related Topics Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more. Related Documents Internal and external diameters, areas, weights, volumes and number of threads for schedule 80 steel pipes. Pipe sizes, inside and outside diameters, wall thickness, schedules, moment of inertia, transverse area, weight of pipe filled with water - U.S. Customary Units. The Darcy-Weisbach equation can be used to calculate the major pressure and head loss due to friction in ducts, pipes or tubes. Friction head loss ( ft) in water pipes can be estimated with the empirical Hazen-Williams equation. H2O per 100 ft pipe Maximum water flow capacities in steel pipes - pipe dimensions ranging 2 - 24 inches. Friction loss and velocity diagrams - in imperial (psi/100 ft, ft/s) and SI (Pa/100m, m/s) units. Water flow and pressure loss in schedule 40 steel pipes - Imperial and SI units - gallons per minute, liters per second and cubic meters per hour. Friction loss in steel pipes for fluids with viscosities ranging 32 - 80000 SSU.
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