Knife gate valve having elastomeric seals

Details Knife gate valve having elastomeric seals Knife gate valve having elastomeric seals

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 3/02 (2006.01)

Patent

CA 2560666

A gate seal (52) for a knife gate valve comprising a sealing surface lining the gate channel and an integral gasket for compression between valve body halves, a chest seal (54) for a knife gate valve comprising a body having an expandable sealing surface and one or more injection chambers (60) adapted to receive an injectable packing, each chamber having a cross-sectional area that is completely surrounded by the body member, and/or a knife gate valve comprising one or both such seals. The chest seal body may comprise a knife gate slot (56) that is peripherally surrounded by the body. The gate seal (52) and the chest seal (54) may comprise a single integral elastomeric member or separate components.

L'invention concerne un joint de vanne (52) destiné à un robinet-vanne à guillotine et comprenant une surface d'étanchéité alignant le canal de la vanne et une garniture intégrale destinée à la compression entre des moitiés du corps du robinet, un joint de boîte (54) destiné à un robinet-vanne à guillotine et comprenant un corps présentant une surface d'étanchéité expansible et une ou plusieurs chambres d'injection (60) conçues pour recevoir un enveloppage injectable, chaque chambre possédant une zone transversale complètement entourée par l'élément du corps et/ou un robinet-vanne à guillotine comprenant un ou deux tels joints. Le corps du joint de boîte peut comprendre une fente de vanne de guillotine (56) entourée sur la périphérie par le corps. Le joint de vanne (52) et le joint de boîte (54) peuvent comprendre un élément élastomère intégral unique ou des composants distincts.

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