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PVC Pipes - Equivalent Length and Pressure Loss in Fittings

Minor loss in PVC and CPVC fittings expressed 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 1/2345681012
90o Elbow 1.6 2.1 2.6 3.5 4.0 5.2 6.2 7.7 10.1 12.6 15.2 20 25.1 30
45o Elbow and 90o Long Sweep Radius Elbow 0.8 1.1 1.4 1.8 2.2 2.8 3.3 4.1 5.1 6.7 8.1 10.6 13.4 15.9
Gate valve, fully open 0.4 0.6 0.7 0.9 1.1 1.4 1.7 2.0 2.7 3.4 4 5.3 6.7 8
Tee Flow - Run 1.0 1.4 1.7 2.3 2.7 3.5 4.1 5.1 6.7 8.4 10.1 13.3 16.7 20
Tee Flow - Branch 3.1 4.1 5.3 6.9 8.1 10.3 12.3 11.3 20.1 25.2 30.3 40 50.1 58
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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  • Engineering ToolBox, (2004). PVC Pipes - Equivalent Length and Pressure Loss in Fittings. [online] Available at: https://www.engineeringtoolbox.com/pvc-pipes-equivalent-length-fittings-d_801.html [Accessed Day Mo. Year].

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