IEC-60534-8-3 › Historical Revision Information
Part 8-3: Noise Considerations - Control Valve Aerodynamic Noise Prediction Method, Indust
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IEC 60534-8-3:2010 establishes a theoretical method to predict the external sound-pressure level generated in a control valve and within adjacent pipe expanders by the flow of compressible fluids. This method considers only single-phase dry gases and vapours and is based on the perfect gas laws. It is assumed that the downstream piping is straight for a length of at least 2 m from the point where the noise measurement is made. The method is applicable to the following single-stage valves:
- globe (straight pattern and angle pattern),
- butterfly,
- rotary plug (eccentric, spherical),
- ball, and
- valves with cage trims.
Specifically excluded are the full bore ball valves where the product FpC exceeds 50 % of the rated flow coefficient. This third edition cancels and replaces the second edition published in 2000. This edition constitutes a technical revision. The significant technical changes with respect to the previous edition are as follows:
- predicting noise as a function of frequency;
- using laboratory data to determine the acoustical efficiency factor.
To find similar documents by classification:
25.040.40 (Industrial process measurement and control)
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Document Number
IEC 60534-8-3 Ed. 2.0 b:2000
Revision Level
2ND EDITION
Status
Superseded
Publication Date
July 1, 2000
Committee Number
65B