Butterfly valve having metal-to-metal sealing with conical...

Details Butterfly valve having metal-to-metal sealing with conical... Butterfly valve having metal-to-metal sealing with conical...

F - Mech Eng,Light,Heat,Weapons

16

K

251/29

F16K 1/226 (2006.01)

Patent

CA 1044211

BUTTERFLY VALVE HAVING METAL-TO-METAL SEALING WITH CONICAL ANGLE-TRANSPORT VANE ABSTRACT OF THE DISCLOSURE A butterfly valve that has a metal valve seat and a metal vane, providing fluid-tight metal-to-metal sealing. The valve seat is annular and has an inner cir- cular line surface for engagement with the metal vane. The vane is a conical angle-transported disc, the upper face of the disc being angle-transported between 20° and 40° with respect to the lower face. Both faces are true circles, as is every section of the vane parallel to the faces, When the vane mates with the valve seat, true circular line contact sealing results, the valve seat only being very slightly deflected by the vane to effect sealing.

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