COUPLING ASSEMBLIES FOR ROTARY VALVES AND RELATED VALVE TRIMS

Abstract: rotary valves and related valve trims. a valve trim for a rotary valve assembly includes a valve shaft, a flow control element coupled to the valve shaft, and a coupling assembly for coupling the valve shaft to the flow control element. the coupling assembly includes an expansion pin having a central bore and a taper pin sized for insertion in a central bore of the expansion pin. the expansion pin and the taper pin together are sized for insertion into a cross bore of the flow control element and through a lateral bore of the valve shaft. a retainer is arranged to maintain the taper pin in the central bore of the expansion pin. the retainer limits movement of the taper pin relative to the expansion pin.

Inventor(s): Jesse Serrano, Robert M. Meloy

CPC Classification: F16K1/36 (VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits )})

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