Retention attachments
The TOPWET retention attachment is designed to reduce the outflow of rainwatertowards the sewer network with the possibility of setting the outflow value in a certainrange.
| TW RETN | — |
The TOPWET retention attachment is designed to reduce the outflow of rainwatertowards the sewer network with the possibility of setting the outflow value in a certainrange.
| TW RETN | — |
