Exhaust gas recirculation valve valve element mechanism

Spaced from the center line P of the seal surface 2b of the valve seat 2a of the valve body 5 for opening and closing a fluid passage center O of the support shaft 4 is rotatably disposed in the housing 2 is rotated by a support shaft 4 comes into contact a primary eccentric a to a secondary eccentric B to separate the center O of the support shaft 4 from the centerline Q of the housing 2, the apex of the cone 6 constituting the sealing surface 5a and the sealing surface 2b of the valve seat 2a of the valve element 5 the G, with is positioned on the opposite side of the support shaft 4, composed of a tertiary eccentricity C for tilting with respect to the center line of the housing 2.