PVC - Friction Loss in Fittings and Equivalent Length

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

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

Friction Loss - Equivalent Length (feet of Straight Pipe)
Fitting Nominal Pipe Size (inches)
1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4 6 8 10 12
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
Gatevalve 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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