Abatement of control valve noise

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      <subfield code="a">Control valves, the vital elements in fluid piping systems of industrial plants, can be the sources of excessive noise, a pollutant that not only hampers a worker's efficiency but also threatens his physical well-being. Predicting aerodynamic noise generated in control valves permits abatement measures to be taken quickly and economically</subfield>
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      <subfield code="g">Vol. 114, nº 4, October 1976 ; p. 58-61</subfield>
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