公开(公告)号：US20170299071A1

公开(公告)日：2017-10-19

申请号：US15518014

申请日：2015-10-13

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES ,  TECHNETICS GROUP FRANCE SAS

Inventor： Laurent GUIMET ,  Florent LEDRAPPIER ,  Michel LEFRANCOIS

IPC: F16K5/06 ,  F16K27/06 ,  F16K5/20

CPC classification number: F16K5/0678 ,  F16K5/201 ,  F16K27/067

Abstract: An annular assembly for compressing a seat of a ball-valve, including: a valve body or insert, including an annular internal counter-bore that defines an inner counter-bore diameter; a sleeve inserted into the annular internal counter-bore, defining at least one outer diameter of the sleeve; the body or the insert defining with the sleeve an annular housing in which the assembly includes, in succession: a downstream stack of head rings, an annular head shim, a stack of mechanisms of compression, an annular base shim, and an upstream stack of base rings.