Patent ID: 8465002

Claim:
A valve, comprising a housing whose wall has an inner surface curving around an axis of rotation and which joins together a first part and a second part of a flow channel, of which at least the first part or the second part is connected to the housing via an opening in the wall of the housing, a closing member arranged in the housing and a shaft protruding from the closing member by which the closing member is rotatable in the housing around said axis of rotation between a position covering the opening and a position uncovering the opening, said closing member including a sector closing the opening, a guiding cylindrical sector in contact with the housing wall to position the closing member relative to the housing, a flexible sector having a wall thinner than a wall of the closing sector and a wall of the guiding cylindrical sector, the guiding cylindrical sector being joined to the closing sector via the flexible sector only, and an open sector that is a void extending from a bottom of the closing member to completely separate the closing sector from the guiding cylindrical sector.