Patent ID: 7392826
Filing Date: 2008-07-01
Classification: F02D,F02M,Y10T

Abstract:
1. A valve device for regulating a gaseous fluid, in a conduit portion, comprising a valve body attached to a support spindle extending transversely into said portion and mounted to rotate therein between open and closure positions, said conduit portion comprising, on either side of said spindle, opposing internal steps forming two bearing surface portions for corresponding edge parts of said valve body, when said valve body is in the closure position, each step extending substantially over approximately half of the internal circumference of the conduit portion in the region of the mounting position of the support spindle and said steps being offset on either side of the plane perpendicular to the direction of circulation of the fluid in said portion and containing said support spindle such that the pivot angle of the valve body between its maximum open position and its closure position is less than 90° wherein said valve body has two opposite surfaces, each surface having a respective edge part ( 6 , 6 ′) that include deformable sealing means ( 7 , 7 ′), for operation thereof in the closure position of said valve body ( 3 ), said sealing means defining first and second flexible lips extending in opposite directions from said edge parts ( 6 , 6 ′) on the surfaces of said valve body ( 3 ) and at an inclination to the plane of the valve body ( 3 ), the first lip ( 7 ) extending toward the exterior and the second lip ( 7 ′) extending toward the interior, wherein said first lip ( 7 ) extends outwards from a peripheral edge of the corresponding edge part ( 6 ).