Ball valve with sealing means for the closure part
First Claim
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1. A ball valve, comprising:
- a) a housing having a duct extending along a longitudinal axis between an inlet and an outlet, and an annular valve seat within the duct;
b) a ball mounted in the duct for turning movement, and having a bore and a pair of annular projections extending outwardly of, and being of one-piece with, the ball, said projections bounding an annular groove therebetween;
c) an annular sealing ring mounted in the groove;
d) said projections being constituted of a bendable material that is deformable from an initial position in which the projections are concentric with the longitudinal axis and spaced radially apart to receive the sealing ring, to a final position in which the projections are bent towards each other to engage and fixedly secure the sealing ring in the groove; and
e) means for jointly turning the ball and the ring secured thereon between open and closed positions in which the bore is aligned and misaligned, respectively, with the duct, said ring sealingly engaging the valve seat in the closed position.
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Abstract
A ball valve with seals for the closure part, each seal is profiled in cross section and can be blocked in the closure part with the assistance of annular flanges which can be bent over against the seals.
19 Citations
9 Claims
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1. A ball valve, comprising:
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a) a housing having a duct extending along a longitudinal axis between an inlet and an outlet, and an annular valve seat within the duct; b) a ball mounted in the duct for turning movement, and having a bore and a pair of annular projections extending outwardly of, and being of one-piece with, the ball, said projections bounding an annular groove therebetween; c) an annular sealing ring mounted in the groove; d) said projections being constituted of a bendable material that is deformable from an initial position in which the projections are concentric with the longitudinal axis and spaced radially apart to receive the sealing ring, to a final position in which the projections are bent towards each other to engage and fixedly secure the sealing ring in the groove; and e) means for jointly turning the ball and the ring secured thereon between open and closed positions in which the bore is aligned and misaligned, respectively, with the duct, said ring sealingly engaging the valve seat in the closed position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification