Butterfly valve main-tapping apparatus
The disclosed apparatus includes a butterfly valve, the body of which has co-axial in-flow and out-flow tubes, flanged at their outer ends and integral with a central box forming a transversely disposed slot-like wedge shaped chamber open at one side of said box for snugly, slidably receiving an ann...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The disclosed apparatus includes a butterfly valve, the body of which has co-axial in-flow and out-flow tubes, flanged at their outer ends and integral with a central box forming a transversely disposed slot-like wedge shaped chamber open at one side of said box for snugly, slidably receiving an annular wedge shaped wafer in the middle of which a butterfly disc is diametrally, pivotally mounted on trunnions journalling in said wafer on an axis aligned with the side opening of said box. The latter opening is normally covered with a plate. Mounted on the opposite side of the valve body box is a gear type valve disc operator which makes splined connection with the adjacent disc trunnion. |
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