| 摘要 |
A closure device for drainpipes has an elastic inflatable body (1) and can be actuated with only one hand, since the inflatable body completely encloses a pressurized gas container (2) to be connected to its pressurized gaz inlet (10). The inflation volume and force can be predetermined by means of a manually actuated gas metering device (8) arranged in the duct (9, 10) between the pressurized gas container (2) and the inflatable body (1). |
