A functional device, such as an on-off valve, provided with...

Details A functional device, such as an on-off valve, provided with... A functional device, such as an on-off valve, provided with...

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 41/04 (2006.01) F16K 1/30 (2006.01)

Patent

CA 2574849

The present invention relates to an on-off valve provided with sealing means for the control stem. The sealing means comprise a plurality of sealing rings of expanded graphite and a gland device for placing said rings in compression. The sealing means further comprise a further active element (20) arranged on the bottom wall (30), provided with an expansion room (22) wherein the fluid pressure causes a thrust action towards said sealing ring. Said sealing means distribute the strain state of the compressed rings in an optimum manner.

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