PVC - Equivalent Length Friction Loss in Fittings
Minor loss for PVC and CPVC fittings in equivalent length of straight pipe
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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 | 1.5 | 2.0 | 2.5 | 3.8 | 4.0 | 5.7 | 6.9 | 7.9 | 12.0 | 18.0 | 22.0 | 26 | 32 |
| 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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