Piping Entry And Exit Minor Loss Factor

Calculate typical pipe entry and exit minor loss factors (K, Cd, Cv*, Av, Cv-uk, Cv-us, Cv-met and Kv).

Minor loss factors canbe calculated for pipe exits, inward protruding entries, sharp edged flush entries, and radiused flush entries.

Minor loss factors are calculated for:

• Av (SI) flow coefficient - the flow in cubic meters per second fluid density 1 kilogram per cubic meter which gives a pressure drop of 1 Pa
• Cv-uk (UK) flow coefficient - the flow in UK gallons per minute of water at 60 degrees F which gives a pressure drop of 1 psi
• Cv-us (US) flow coefficient - the flow in US gallons per minute of water at 60 degrees F which gives a pressure drop of 1 psi
• Cv-met (Metric) flow coefficient - the flow in liters per minute of water at 16 degrees C which gives a pressure drop of 1 bar
• Kv (EU) flow coefficient - the flow in cubic meters per hour of water at 16 degrees C which gives a pressure drop of 1 bar
• Cv* the dimensionless US flow factor = Cv-us / din^2 (din is the inside diameter in inches)
• K factor - the ratio of pressure loss over the dynamic pressure
• Cd or discharge coefficient - the ratio of the actual flow rate of the fluid through the fitting over the frictionless flow rate.

The calculated values are typical. Manufacturers data should be used if it is available.

Reference : Crane Technical Paper 410M Metric Version : Flow Of Fluids Through Valves, Fittings And Pipe

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