Valve with ball of controlled deformation

Details Valve with ball of controlled deformation Valve with ball of controlled deformation

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 5/06 (2006.01)

Patent

CA 2313207

A valve with ball of controlled deformation for fluid shut-off comprising an external containment body, inside which is arranged a shutter element, movable between a closure position and an opening position of the valve, the shutter element cooperating with one or more seats and providing for seal elements with respect to the containment body and to the shutter element, in which the shutter element provides for yielding zones in its spherical portions disposed downstream of the seats with respect to a pressure zone. Preferably the yielding zones are provided by notches produced on surface zones of the shutter elements in correspondence with the spherical portions.

Ce clapet à bille, à déformation maîtrisée de la bille, destiné à faire cesser un écoulement de fluide, comporte un corps extérieur de confinement (11) dans lequel se trouve un élément d'obturation (13) passant d'une position de fermeture à une position d'ouverture du clapet, cet élément d'obturation coopérant avec un ou plusieurs sièges (12) et constituant lui-même un élément d'étanchéité avec le corps de confinement. Cet élément d'obturation comporte des zones de fléchissement (15a) dans ses parties sphériques (15) se trouvant en aval des sièges par rapport à la zone de pression. Ces zones de fléchissement sont le fait d'encoches (19) ménagées dans les régions superficielles de l'élément d'obturation en relation de correspondance avec les parties sphériques.

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