Conduit fitting with pull-up indication

Details Conduit fitting with pull-up indication Conduit fitting with pull-up indication

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 19/10 (2006.01)

Patent

CA 2563798

A fitting (10) for a tube or pipe capable of functioning a high pressures having a first fitting component (12) adapted to receive the conduit end (T) ; a conduit gripping device (20,22) such as a ferrule or ferrules and a second fitting component (16) that can be joined to the first fitting component to cause the conduit gripping device to grip the conduit and seal when assembled. In one aspect of the invention, the first fitting component is constructed from a material that is softer than the material used to construct the second fitting component. An additional aspect of the invention include a retaining portion (36) on the second fitting component that constrains the tube gripping device against pressure. The retaining portion can also be configured to retain the tube gripping device to the second fitting component prior to installation and in a finger-tight condition. A further aspect of the invention includes a first fitting component in which an exterior portion (31) of the component is work hardened radially outward from the tube gripping device. The fitting may optionally be provided with a structure to effect the pull-up by torque functionality.

Un raccord (10) pour tubes ou tuyaux capable de fonctionner à haute pression comprend un premier composant de raccordement (12) adapté pour recevoir l'extrémité de la conduite (T). Il comprend également un dispositif de prise de conduite (20, 22) telle qu'une ou plusieurs bagues d'extrémité et un second composant de raccordement (16) qui peut être relié au premier composant de raccordement pour amener le dispositif de prise de conduite à serrer le conduit et former un assemblage étanche. Dans un premier aspect de l'invention, le premier composant de raccordement est constitué d'un matériau plus souple que celui qui est utilisé pour fabriquer le second composant de raccordement. Un deuxième aspect de l'invention concerne une partie de retenue (36) située sur le second composant de raccordement qui contraint le dispositif de prise de tube à la pression. De plus, la partie de retenue peut être configurée pour retenir le dispositif de prise de tube sur le second composant de raccordement avant l'installation par serrage manuel. Un autre aspect de l'invention concerne un premier composant de raccordement dans lequel une partie extérieure (31) du composant est écrouie radialement vers l'extérieur du dispositif de prise de tube. Le raccordement peut éventuellement comprendre une structure qui permet le démarrage par couple minimal.

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