F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/27
F16K 1/22 (2006.01) F16K 1/226 (2006.01)
Patent
CA 1269085
QUARTER TURN VALVE Abstract of the Disclosure The disclosure is directed to a high performance butterfly control valve which may be applied and utilized in critical high pressure and/or high performance operation environments. In accordance with the invention, the vane of the butterfly valve is formed to include first and second diametrically opposed, asymmetrical projections, each extending from the periphery of the vane and each including a plurality of fluid control passages formed therethrough. The projection adjacent the downstream rotated periphery of the vane is formed to a generally smooth, streamlined configuration to minimize the overall volume of the vane, and to facilitate a smooth, turbulence free flow when the valve is in the full open position. Moreover, the projection adjacent the upstream rotated periphery of the vane is formed to a length of extension which is greater than the length of extension of the diametrically opposed projection. The asymmetrical projections and fluid control passages provide low angle flow control with an overall vane configuration that affords a practical maximum full open valve fluid flow.
501590
Herr Leroy E.
Kunkle Timothy E.
Shea Allan K.
Copes-Vulcan Inc.
Osler Hoskin & Harcourt Llp
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