High strength ball valve seat assembly

Details High strength ball valve seat assembly High strength ball valve seat assembly

F - Mech Eng,Light,Heat,Weapons

16

K

251/51

F16K 5/06 (2006.01)

Patent

CA 1291104

HIGH STRENGTH BALL VALVE SEAT ASSEMBLY Abstract of the Disclosure A ball valve for low and high pressure applications including a metallic seat member that toroidally deflects into sealing engagement with a ball member outer surface upon valve assembly. The seat member includes an outer circumferential rim portion and a radially inward extending frusto-conical portion. The rim portion is radially interposed between an annular, resilient flange member and an annular support member. The rim portion and resilient flange member define a behind-the-seat seal while the frusto-conical portion and support member abuttingly engage during extreme pressure conditions for added structural support. The radially innermost edge of the frusto-conical portion has an arcuate conformation to inhibit scoring of the ball member surface.

534181

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