The device comprises at least an inlet tube (1 ) for the passage of fluid to be drained, said tube (1 ) being connected to a chamber (2) wherein said chamber (2) comprises rotating means (4,5) for adjusting the flow rate in said tube.
The device comprises at least an inlet tube (1 ) for the passage of fluid to be drained, said tube (1 ) being connected to a chamber (2) wherein said chamber (2) comprises rotating means (4,5) for adjusting the flow rate in said tube.