Patent ID: 7448593

Claim:
Throttle flap valve having an essentially ring-shaped, elastic seal element ( 4 ) that surrounds an axial opening, having a valve disk ( 6 ) disposed to rotate in the axial opening, crosswise to the axial direction, having means for turning the valve disk ( 6 ) between the open and the closed positions, to control a flow of fluid through the opening, having at least two valve housing parts ( 5 ) configured as two clamp halves ( 5 ) that essentially surround the seal element ( 4 ) in ring shape, which surround two flanges ( 3 ) connected with an inflow ( 1 ) and an outflow ( 2 ), the clamp halves having inner surfaces in contact with the seal element ( 4 ) comprising two ring-shaped depressions ( 10 ) surrounding the flanges ( 3 ), in each instance, wherein the depressions ( 10 ) are raised higher than the portion of the clamp halves in contact with the seal element ( 4 ), whereby conical contact surfaces of the flanges ( 3 ) and/or the valve housing parts ( 5 ) work together in such a manner that the flanges ( 3 ) are pressed axially against the seal element ( 4 ), forming a seal, by means of the valve housing parts ( 5 ), in the assembled state ready for operation, wherein the flanges ( 3 ) are rigidly connected with the valve housing parts ( 5 ), forming a positive lock, in each instance, and wherein the flanges ( 3 ) are shaped to have rotation symmetry.