| 摘要 |
The invention provides a sewer flushing device for location in a sewage system. The device comprises a housing with an inlet, an outlet and a sewage flow path defined between said inlet and outlet. At least one of the inlet or outlet is adapted to connect to a conduit of the sewage system. A gate is pivotally supported on the housing for movement between open and closed positions and the gate has a pivot axis between the upper and lower ends. Biasing means are configured to urge the gate to a closed position whereat the flow path is substantially blocked causing a build-up of sewage upstream of the gate. The gate is moved to its open position only when the build-up of sewage behind the gate reaches a predetermined level thus causing the built-up sewage to be rapidly released to flush the sewage system downstream of the flushing device. |
