Stergiopulos, Nikolaos2015-09-222015-09-222015-09-222009https://infoscience.epfl.ch/handle/20.500.14299/118491The 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.patentCN101918071US2016287439US9375347JP5390531ES2410430EP2214769EP2417946US2011066098JP2011504392CN101918071EP2214769WO200906613339508864