Selective double backseat for valve stems

Details Selective double backseat for valve stems Selective double backseat for valve stems

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 41/04 (2006.01)

Patent

CA 2094309

The invention is directed to a valve stem double backseat seal whereinthe rising tem first engages a non-metallic radial seal and then axially engages the metal backseat shoulder of the valve bonnet.

L'invention porte sur un joint d'étanchéité de siège arrière double pour tige de vanne, la tige montante se mettant d'abord en prise sur un joint d'étanchéité radial non métallique et se mettant ensuite axialement en prise sur l'épaulement métallique du siège arrière du couvercle de la vanne.

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