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PVC - Friction Loss in Fittings and Equivalent Length

Minor loss in PVC and CPVC fittings as equivalent length of straight pipe

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Minor loss for PVC and CPVC fittings as Equivalent Length of Straight Pipe (feet) for water:

For full table with larger dimensions - rotate the screen!

Friction Loss - Equivalent Length (feet of Straight Pipe)
FittingNominal Pipe Size (inches)
1/23/411 1/41 1/222 1/234681012
90o Elbow, long sweep radius 1.5 2.0 2.5 3.8 4.0 5.7 6.9 7.9 12.0 18.0 22.0 26 32
90o Elbow, standard sharp inside radius 3.6 4.5 5.3 6.7 7.5 8.6   11.1 13.1        
45o Elbow 0.8 1.1 1.4 1.8 2.1 2.6 3.1 4.0 5.1 8.0 10.6 13.5 15.5
Gate valve 0.3 0.4 0.6 0.8 1.0 1.5 2.0 3.0
Tee Flow - Run 1.0 1.4 1.7 2.3 2.7 4.3 5.1 6.2 8.3 12.5 16.5 17.5 20.0
Tee Flow - Branch 4.0 5.0 6.0 7.0 8.0 12.0 15.0 16.0 22.0 32.7 49.0 57.0 67.0
Male/Female Adapter 1.0 1.5 2.0 2.8 3.5 4.5 5.5 6.5 9.0 14

The table can be used for other thermoplastic pipes materials with similar design.

Use the values to calculate minor pressure loss with the Equivalent Pipe Length Method.

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  • en: pvc friction loss minor pvc cpvc equivalent length
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  • Engineering ToolBox, (2004). PVC - Friction Loss in Fittings and Equivalent Length. [online] Available at: https://www.engineeringtoolbox.com/pvc-pipes-equivalent-length-fittings-d_801.html [Accessed Day Mo. Year].

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