PVC - Equivalent Length Friction Loss in Fittings

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

Approximate friction loss for PVC and CPVC fittings in Equivalent Length in feet of Straight Pipe for water can be found in the table below:

Friction Loss Equivalent Length - feet of Straight Pipe (ft)
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 also used for other thermoplastic pipes materials with similar design.

The values can be used to calculate pressure loss with the Equivalent Pipe Length Method.

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