Stem seal configuration for ball valves

Details Stem seal configuration for ball valves Stem seal configuration for ball valves

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 5/06 (2006.01) F16K 41/04 (2006.01) F16K 41/16 (2006.01)

Patent

CA 2235159

A ball valve stem seal comprises a primary seal washer (29), a backup ring (35), O-ring (37), washer (41) and a wave spring (43), whereby the O-ring (37) is maintained in a state of controlled squeeze where it is subjected only to radial compression.

La présente invention concerne un joint de tige pour robinets à tournant sphérique. Il comprend une rondelle d'étanchéité primaire (29), une bague de soutien (35), un joint torique (37), une rondelle (41) et un ressort ondulé (43). Le joint torique (37) est maintenu en état de compression contrôlée, dans lequel il subit uniquement une compression radiale.

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