Extension rings, which provide cleaning and inspection opportunities, are manufactured using polypropylene (PP) material. These rings are specifically designed with reinforcement ribs and have an internal diameter of 1000 mm.
Similar to the eccentric top cones, the extension rings are assembled with sealing rings to ensure proper sealing. When installing the extension rings, it is important to note that the maximum allowable installation depth is 6 meters, while the water table should not exceed 5 meters.
| Diameter | Total height | Material |
|---|---|---|
| 1000 mm | 345 mm | PP |
| 1000 mm | 595 mm | PP |
| 1000 mm | 845 mm | PP |
| 1000 mm | 1095 mm | PP |