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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Hauptverfasser: COUGHLIN, DONALD W
Format: Patent
Sprache:eng
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Beschreibung
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.