High performance butterfly valve seal closure

Details High performance butterfly valve seal closure High performance butterfly valve seal closure

F - Mech Eng,Light,Heat,Weapons

16

K

251/29, 277/59

F16K 1/22 (2006.01) F16K 1/226 (2006.01)

Patent

CA 1129390

ABSTRACT OF THE DISCLOSURE A high performance butterfly valve seal structure in- tended for operation in high pressure and high temperature applications wherein a metallic seal is provided between a disc and a body of the valve including a thin metal, shaped seal ring, continuous throughout 360 degrees, is provided to have line contact in assembled position with both the body of the valve and the closure disc of the valve and being slightly compressed upon closure without pressure in the line so as to be effective under low differential pressure conditions. The seal ring is formed so as to be uneffected by flow through the valve or by corrosive liquids carried in a fluid line in which the valve may be utilized. The valve is intended to be operable against high temperature condi- tions.

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