### Pressure Losses in pipes

 Pipe internal diameter mm Roughness mm Mass flow rate kg/h Density kg/m3 Viscosity mPa.s (cp) Pipe Length m Elevation Difference Hout - Hin m Pressure Difference Pout - Pin kPa Entrance d/D ratio (0-1) Exit d/D ratio(0-1) QTY Short radius ELLs QTY Long radius ELLs QTY TEEs (Branch) QTY TEEs (Run) QTY Check Valves (Lift) QTY Check Valves (Swing) QTY Globe Valves QTY Butterfly Valves QTY Ball Valves QTY Gate Valves QTY Pipe Unions Other Fittings K value Velocity m/s Reynolds number Friction Factor Equivalent Length m Friction Loss kPa Dynamic Pressure kPa Elevation Pressure kPa Total Pressure kPa Total Head m Power required kW

Darcy friction factor calculated by Colebrook's formula when Re > 2200
Elevation Pressure = (Hout - Hin) . g . Density
Total Pressure = Friction Loss + Dynamic Pressure + Elevation Pressure + Pout - Pin
Total head is simply the conversion of Total pressure to head.

 Steel 0.046 mm Glass 0.0015 mm Asphalted cast iron 0.122 mm Cast iron 0.259 mm Concrete 1.5 mm

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