RADIAL SEALING BUTTERFLY VALVE
First Claim
Patent Images
1. A valve assembly, comprising:
- a valve housing, the valve housing defining a passageway;
a flapper valve arranged within the passageway and coupled to a rotatable valve shaft;
a flexible wall sealed along opposed edges to the housing, the flexible wall controllable to at least two positions, including a first position sealing against the flapper valve and a second position releasing the flapper valve to allow for ready movement of the valve.
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Accused Products
Abstract
A valve assembly having a valve housing, the valve housing defining a passageway. A flapper valve arranged within the passageway is coupled to a rotatable valve shaft. A flexible wall, sealed along opposed edges to the valve housing, is controllable to at least two positions. The first position seals against the flapper valve and the second position releases the flapper valve allowing for ready movement of the valve.
8 Citations
26 Claims
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1. A valve assembly, comprising:
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a valve housing, the valve housing defining a passageway; a flapper valve arranged within the passageway and coupled to a rotatable valve shaft; a flexible wall sealed along opposed edges to the housing, the flexible wall controllable to at least two positions, including a first position sealing against the flapper valve and a second position releasing the flapper valve to allow for ready movement of the valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of operation, comprising:
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providing a flapper valve within a valve housing; moving the flapper valve to a closed position; moving a flexible wall, sealed along opposed edges to the housing, against the flapper valve when the flapper valve is in the closed position. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification