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Shell test parameters for PVC-U material.
| Material | Minimum Test Time | Pressure Test (Ptest)1 | Design Stress (σt)2 | Assembly Stress (σs)3 | Temperature | Inner Fluid | Outer Fluid |
|---|---|---|---|---|---|---|---|
| PVC-U | 1 h | 4.2 MPa | 42 MPa | 10 MPa | 20 ± 2 °C | Water | Water or Air |
1 The test pressure is measured following the formula: Ptest = (σt/σs); 2 Design stress corresponds to the maximum stress for the elastic limit not to be exceeded avoiding its plastic strain (MPa); 3 Stress induced under the assembly conditions (MPa).
