Means and method for noise and cavitation attenuation in ball-ty

Details Means and method for noise and cavitation attenuation in ball-ty Means and method for noise and cavitation attenuation in ball-ty

1992-05-29

1993-06-15

Rivell, John

Fluid handling

Processes

13762531, 251127, F16K 4704

Patent

active

052189848

ABSTRACT:
An optional insertable feature to the trim or modulating member for ball-type valves limits the magnitude of fluid flow turbulence within the flow stream of the valve. This attenuates noise and cavitation caused by flow through the valve. The insert mounts into the interior of the trim member and presents two intersecting apertured surfaces. The apertures or holes are specially shaped, sized, and spaced to maximize flow efficiency and minimize fluid turbulence as a result of flow through ball-like valves. The size and orientation of the surfaces are such that they restrict and partition fluid flow through the valve to varying degrees at varying valve openings. Virtually all fluid is partitioned by being directed through the apertured plates during approximately the first 50 percent opening of the valve to minimize noise and cavitation, while insuring that the flow characteristic is a monotonic function between valve capacity and valve opening.

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