Valve assembly for hot gases

Abstract

The present invention proposes a valve assembly comprising a gas-tight housing with a first flow opening arranged in a first lateral side thereof and a second flow opening arranged in a second lateral side thereof; a clamping unit comprising a first clamping device with a first sealing seat and a second clamping device with a second sealing seat; and a valve insert arranged within said housing between said first and second flow openings. The valve insert comprises a bearing unit comprising at least two bearings and a shaft rotatable around a rotation axis of the bearing unit; a flow control body comprising a blocking region and a pass-through region; the flow control body being rotatable around the rotation axis of the bearing unit between a closed position wherein the blocking region is in alignment with the flow openings and an open position wherein the pass-through region is in alignment with the flow openings. The flow control body further comprises first and second plurality of seals, respectively disposed on the blocking region and the pass-through region, the seals of the first plurality being arranged to sealingly engage the first and second sealing seats of the clamping unit in the closed position and the seals of the second plurality being arranged to sealingly engage the first and second sealing seats of the clamping unit in the open position. Each clamping device is movable between a clamped position in both the open and closed position of the flow control body.

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