Multistage trim for control valves
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United States of America Patent
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Feb 13, 2018
Issued Date -
N/A
app pub date -
Nov 14, 2014
filing date -
Nov 15, 2013
priority date (Note) -
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Abstract
A control valve comprising a cylindrical hollow trim defining an inner bore extending along an axis between a first opening and a second opening, the first opening defining an inlet of the valve, the trim comprising a first outer cylinder extending along the axis and comprising a first plurality of radial through holes defining an outlet, a second cylinder, housed in the first cylinder and coaxial, the second cylinder comprising a second plurality of radial through holes, the holes of the first plurality being smaller and in greater number than the holes of the second plurality, for each hole of one of the first and second cylinders the projection along a radial direction on the other of the first and second cylinders being spaced from each hole of the other of the first and second plurality a plug sized to fit inside the bore and slidably movable along the axis.
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