F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 3/02 (2006.01) F16K 3/12 (2006.01)
Patent
CA 2750416
A gate valve (1) is disclosed for mounting in a pipeline, the gate valve (1) comprising a valve body (3) and a gate (21) mounted in the valve body (3) so as to be movable between an open position, and a closed position where a valve opening (7) formed in the valve body (3) is closed by the gate (21). The gate (21) comprises two opposed faces (24, 25) spaced from the transverse plane (22) of the gate (21), at least one face (24) being provided with at least two seals (41, 43) that each extend around the face (24) one seal being located within the periphery of the other such that both seals (41, 43), when the gate (21) is in the closed position, seal against a seat (5) of the valve body (3) to seal against the pressure of fluid acting on the gate (21) in use. A gate (21) is disclosed having four seals (41, 43, 45, 47) in total, two (41, 43) on the upstream gate face (24) and two (45, 47) on the downstream gate face (25).
La présente invention concerne un robinet-vanne (1) destiné à être monté dans un pipeline, le robinet-vanne (1) comprenant un corps de vanne (3) et un clapet (21) monté dans le corps de vanne (3) de façon à pouvoir passer d'une position ouverte à une position fermée, dans laquelle une ouverture de vanne (7) formée dans le corps de vanne (3) est fermée par le clapet (21). Le clapet (21) comprend deux faces opposées (24, 25) espacées du plan transversal (22) du clapet (21), au moins une face (24) étant dotée d'au moins deux joints (41, 43), chacun des joints s'étendant autour de la face (24), un joint étant situé dans la périphérie de l'autre, de sorte que les deux joints (41, 43), lorsque le clapet (21) est en position fermée, appuient de façon étanche contre un siège (5) du corps de vanne (3) pour assurer l'étanchéité contre la pression du fluide agissant sur le clapet (21) utilisé. Le clapet (21) présenté possède quatre joints (41, 43, 45, 47) au total, deux (41, 43) sur la face du clapet en amont (24) et deux (45, 47) sur la face du clapet en aval (25).
Innovative Pipesystems Limited
Ridout & Maybee Llp
LandOfFree
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