| 摘要 |
The invention relates to a valve, in particular a shuffle or sliding valve, for essentially gastight closing of a flow path (F). The valve includes a valve housing ( 1;1 a) having a first wall ( 2 ) which has a first opening ( 3 ) and a first valve seat ( 4 ), a valve disk ( 5 ) having a closing side ( 6 ) with a sealing ring ( 7 ) and at least one drive ( 8 ). Through the drive ( 8 ), the valve disk ( 5 ) is pivotable or displaceable from an opened position (A) essentially parallel to the first valve seat ( 4 ), and the perpendicular distance between the valve disk ( 5 ), and the first valve seat ( 4 ) can be reduced so that, in the closed position (C), the flow path (F) is closed essentially gastight by an axially sealing contact between the sealing ring ( 7 ) and the first valve seat ( 4 ). The valve disk ( 5 ) includes an outer disk section ( 9 ), which is connected to the drive ( 8 ) and fixes the sealing ring ( 7 ) in the perpendicular direction to the first valve seat ( 4 ), and an inner disk section ( 10 ) which has an outer circumferential area ( 11 ) and which is mounted so as to be movable relative to the outer disk section ( 9 ) in a direction (Z) essentially perpendicular to the first valve seat ( 4 ). The outer circumferential area ( 11 ) is enclosed essentially gastight with an inner seal by the sealing ring ( 7 ). Thus, in the closed position (C), a pressure difference at the valve disk ( 5 ) acts essentially on the inner disk section ( 10 ) so that the inner disk section ( 10 ), decoupled from the outer disk section ( 9 ), is supported perpendicularly on a section of the valve housing ( 1 ), in particular the first valve seat ( 4 ) or a lateral groove ( 27 ).
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