Title: Ball valve for valving abrasive fluids

Abstract: A valve assembly for valving abrasive fluids. A ball valve member is provided for rotation in a body member, the body member having inlet and outlet bores therein. Tubular inserts of abrasion resistant material - such as boron carbide - are provided in the inlet, outlet, and a bore through the valve member. The inserts are selected so that cooperating arcuate sections formed at the ends thereof are of a length greater than or equal to the diameter of the passageways through the inserts. Also the diameter of the passageways is preferably selected so that it is much less than the diameter of the ball valve member so that during throttling the angle of deflection of the abrasive flow will be small. A purge fluid may be injected under pressure in spaces formed between the ball valve member and the body and inlet insert.

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Inventors: Kindersley, Peter G. (Glen Falls, NY, US)

Application Number: 583291
Filing Date: 1975-06-03
Publication_date: 1976-10-12
Assignee: Kamyr Valves, Inc. (Glens Falls, NY)
Primary Class(es): 137/240 137/375, 251/315.03, 251/315.04, 251/315.15, 251/315.16
Other Classes:
US Patent Ref:

867780	Oct, 1907	Auchu	137/375.
885526	Apr, 1908	Ruppel	137/375.
904852	Nov, 1908	Dwyer	137/375.
925809	Jun, 1909	Henss	137/375.
3073336	Jan, 1963	Johnson	137/375.
3825030	Jul, 1974	Kalsi	137/375.

Other Refs:
Primary Examiner: Schwadron, Martin P.
Assistant Examiner: Gerard, Richard
Attorney: Cushman, Darby & Cushman