Ball valve

Details Ball valve Ball valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 5/20 (2006.01) E21B 34/10 (2006.01)

Patent

CA 2583806

A bearing mounted ball valve (10) comprises a housing (12) having a throughbore and a valve seat (16) and an apertured ball (18) mounted within the housing in continuous engagement with the valve seat. The apertured ball is rotatable by rotation means (20), about an axis of rotation, between a throughbore open position and a throughbore closed position. The bearing mounted ball valve further comprises bearing means (26) coupled between the apertured ball and the housing for constraining the rotation of the apertured ball about the axis of rotation between the throughbore open and the throughbore closed position. In the throughbore closed position, the bearing means is adapted to release the apertured ball from the axis of rotation to permit the apertured ball to float into a sealing engagement with the valve seat.

Robinet à tournant sphérique (10) monté sur palier et comprenant un carter (12) qui a un orifice débouchant, un siège de robinet (16) et une sphère trouée (18) montée à l'intérieur du carter en contact continu avec le siège de robinet. Un moyen de rotation (20) peut faire tourner la sphère trouée autour d'un axe de rotation entre une position d'orifice débouchant ouvert et une position d'orifice débouchant fermé. Le robinet à tournant sphérique monté sur palier comprend en outre un moyen de palier (26) assemblé entre la sphère trouée et le carter pour obliger la sphère trouée à tourner autour de son axe de rotation entre les positions d'orifice débouchant ouvert et d'orifice débouchant fermé. Dans la position d'orifice débouchant fermé, le moyen de palier est adapté pour libérer la sphère trouée de son axe de rotation et lui permettre de flotter pour constituer un contact étanche avec le siège de robinet.

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