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Retention System
| Link | Country | Year | Total Length [m] | Nominal Diameter DN [mm] | Nominal Pressure PN [bar] | Nominal Stiffness SN [N/m2] | Technology | |
|---|---|---|---|---|---|---|---|---|
| Storage sewer Königswinter (Siegburger Staße) | Germany | 1993 | 42 | 1600 | 1 | 10000 | Hobas | |
| Storage sewer Schwalbach | Germany | 1991 | 685 | 1800 | 1 | 5000 | Hobas | |
| Storage sewer Lünen | Germany | 1987 | 80 | 1200 | 1 | 5000 | Hobas | |
| Storage sewer Unna-Billmerich | Germany | 1986 | 660 | 1800 | 1 | 5000 | Hobas | |
| Storage sewer Hemer-Stephanopeler Tal | Germany | 1986 | 50 | 1800 | 1 | 10000 | Hobas |
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