NO742637L

The specification and drawings disclose a ball valve having an improved relationship between the ball and seat ring members. In general, the ball is mounted for selective rotation and limited axial movement in a valve body. Seat ring members are positioned on diametrically opposite sides of the ball...

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Bibliographic Details
Main Authors DIGENNARO R S, KOCH U H, MATOUSEK S, DRAKE D N, SODERLUND G A
Format Patent
LanguageEnglish
Published 20.05.1975
Edition2
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 specification and drawings disclose a ball valve having an improved relationship between the ball and seat ring members. In general, the ball is mounted for selective rotation and limited axial movement in a valve body. Seat ring members are positioned on diametrically opposite sides of the ball about the inlet and outlet openings. The ring members are biased into engagement with the ball by conical disc springs. The springs are mounted between the seat ring members and annular flanges formed within the body. Sizing is such that in the normal assembled condition, the conical disc springs are compressed to a flat configuration in engagement throughout their diameter with the associated flange and act to maintain the radially inner portions of the seat rings in biased engagement with the ball under a predetermined minimum force.
Bibliography:Application Number: NO19740002637