The invention relates to a valve comprised of a housing with a valve seat for a flap that is rotatably mounted on a drive shaft. The exterior of the flap is provided with a first piston sealing ring and a second piston sealing ring that are placed inside an encircling groove of the flap. Each sealing ring is provided in the form of a metal ring. The first ring has a first gap and the second ring has a second gap that are not aligned with one another. The invention also relates to the use of said valve.
CROSS REFERENCE TO RELATED APPLICATIONS
The present application is a continuation of international application PCT/DE03/03262, filed on Sep. 9, 2003, which designated the United States and was pending at the time of designation and the filing of the present application; and further claims priority to German patent application 10251384.8, filed Nov. 1, 2002; the both of which are herein incorporated by reference.
A valve having a housing with a valve seat for a two-piece flap which is rotatably mounted on a drive shaft. An annular piston seal and an adjacent cover disk are disposed between the first part and the second part of the two-piece flap so as to revolve there-around. The diameter of the cover disk is smaller than the diameter of the annular piston seal which is embodied as a metal ring that is provided with a gap. The invention also relates to the use of said valve as a gas recirculation valve.
