Dual chamber orifice fitting

Details Dual chamber orifice fitting Dual chamber orifice fitting

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/04 (2006.01) G01F 1/40 (2006.01) G01F 15/00 (2006.01)

Patent

CA 2583951

Disclosed herein is a dual chamber orifice fitting including a first chamber maintained in fluid communication with a pipeline and a second chamber maintained in fluid communication with the first chamber. The fitting includes sealing member formed as an eccentric plug member that is selectively rotatable from a first position wherein the sealing member seals the first chamber from the second chamber, and a second position wherein the sealing member permits the first chamber to be placed in fluid communication with the second chamber. The sealing member includes a curved sealing surface having a pocket recessed therein for containing a non-metallic insert seat. The non-metallic insert seat sealingly engages a seat plate when the sealing member is in the first position. A retainer plate retains the insert seat in the recessed pocket.

L'invention concerne un raccord d'orifice à deux chambres, comprenant une première chambre en communication libre avec un pipeline et une seconde chambre en communication libre avec la première chambre. Le raccord comprend un élément scellant formé d'un bouchon excentrique à rotation sélective à partir d'une première position où l'élément isole la première chambre de la seconde, et une deuxième position où l'élément permet à la première chambre de communiquer librement avec la seconde. L'élément scellant comporte une surface d'étanchéisation courbée comportant une pochette renfoncée à l'intérieur de ladite surface pour contenir un siège rapporté non métallique. Ce siège rapporté engage une plate d'appui de manière à assurer une étanchéisation lorsque l'élément scellant est placé à la première position. Une plaque de retenue maintient le siège rapporté en place dans la pochette renfoncée.

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