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Tableaux de réduction de la pression
Les pressions nominales et les températures limites sont définies dans la norme DIN 2401. Plus la température est élevée, plus le rendement diminue. Le tableau I s’applique à nos raccords et robinetteries des séries 1 et 2 (sauf séries 1M, 1W+, 2M, 2T).
Par ailleurs, les raccords des séries 1+ et 1B+ sont conçus pour une pression PN 16 (voir tableau II).
Tableaux de réduction de la pression I
| MATÉRIAU: | PA | PP | PVDF | PTFE | PFA | PEEK |
|---|---|---|---|---|---|---|
| PRESSION: | PN 10 | PN 10 | PN 10 | PN 6 | PN 10 | PN 10 |
| -40°C | 75% | 75% | 75% | 75% | 100% | |
| -20°C | 100% | 100% | 100% | 100% | 100% | |
| 5°C | 100% | 100% | 100% | 100% | 100% | 100% |
| 20°C | 100% | 100% | 100% | 100% | 100% | 100% |
| 30°C | 80% | 80% | 80% | 80% | 90% | 100% |
| 40°C | 50% | 70% | 70% | 70% | 85% | 100% |
| 50°C | 20% | 60% | 60% | 60% | 80% | 100% |
| 60°C | 10% | 50% | 50% | 50% | 70% | 100% |
| 70°C | 40% | 45% | 40% | 60% | 100% | |
| 80°C | 30% | 40% | 30% | 50% | 100% | |
| 90°C | 20% | 35% | 30% | 40% | 100% | |
| 100°C | 35% | 30% | 40% | 100% | ||
| 110°C | 30% | 25% | 35% | 90% | ||
| 120°C | 25% | 25% | 30% | 85% | ||
| 130°C | 25% | 25% | 30% | 80% | ||
| 140°C | 10% | 20% | 25% | 80% | ||
| 150°C | 10% | 20% | 75% | |||
| 160°C | 15% | 70% | ||||
| 170°C | 10% | 70% | ||||
| 180°C | 10% | 60% | ||||
| 190°C | 50% | |||||
| 200°C | 45% | |||||
| 220°C | 40% | |||||
| 230°C | 30% | |||||
| 240°C | 20% | |||||
| 250°C | 10% |
Tableau de réduction de la pression II pour les séries 1+, 1B+
| MATÉRIAU: | PP | PVDF | PFA |
|---|---|---|---|
| PRESSION: | PN 16 | PN 16 | PN 16 |
| -40°C | 75% | 75% | |
| -20°C | 100% | 100% | |
| 5°C | 100% | 100% | 100% |
| 20°C | 100% | 100% | 100% |
| 30°C | 80% | 80% | 90% |
| 40°C | 70% | 70% | 85% |
| 50°C | 60% | 60% | 80% |
| 60°C | 50% | 50% | 70% |
| 70°C | 40% | 45% | 60% |
| 80°C | 30% | 40% | 50% |
| 90°C | 20% | 35% | 45% |
| 100°C | 35% | 40% | |
| 110°C | 30% | 35% | |
| 120°C | 25% | 30% | |
| 130°C | 25% | 30% | |
| 140°C | 10% | 25% | |
| 150°C | 20% | ||
| 160°C | 15% | ||
| 170°C | 10% | ||
| 180°C | 10% | ||
| 190°C | |||
| 200°C |
