CORROSION RESISTANT VALVING EDGE FOR BUTTER-FLY VALVE DISC

The disclosure concerns a scheme for providing a corrosion resistant valving edge of the rotatable disc of a butterfly valve. The valving edge is defined by a ring of corrosion resistant material which is shrink fitted into an annular groove formed in the periphery of the disc. The ring is subjected...

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Bibliographic Details
Main Authors KORMOS K,US, SZILAGYI D,US
Format Patent
LanguageEnglish
Published 10.04.1973
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:The disclosure concerns a scheme for providing a corrosion resistant valving edge of the rotatable disc of a butterfly valve. The valving edge is defined by a ring of corrosion resistant material which is shrink fitted into an annular groove formed in the periphery of the disc. The ring is subjected to a substantial hoop stress which compresses it tightly against the surface of the groove and retains it in place. In some cases, however, this self-retaining action may be supplemented by tack welding the ring to the disc.
Bibliography:Application Number: USD3726504