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IEC 60534-8-4 Ed. 3.0 Edition 09/2015
Industrial-process control valves - Part 8-4: Noise considerations - Prediction of noise generated by hydrodynamic flow
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Abstract

IEC 60534-8-4:2015 establishes a method to predict the noise generated in a control valve by liquid flow and the resulting noise level measured downstream of the valve and outside of the pipe. The noise may be generated both by normal turbulence and by liquid cavitation in the valve. Parts of the method are based on fundamental principles of acoustics, fluid mechanics, and mechanics. The method is validated by test data. This third edition cancels and replaces the second edition published 2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Hydrodynamic noise is predicted as a function of frequency and
b) Elimination of the acoustic power ratio.

Status

Standard - Active

Origin

Technical Committee :
65B : Measurement and control devices

Implementation

start of the vote on the project      date of ratification (dor)   
end of the vote on the project      date of anouncement (doa)   
start of the vote on the final project      date of publication (dop)   
end of the vote on the final project      date of withdrawal (dow)   


Publication Official Journal
of the Grand-Duchy of Luxembourg
Reference

Relations

Relations to older standards
IEC 60534-8-4 Ed. 2.0
IEC 60534-8-4 fC1 Ed. 2.0

International Classification for Standards (ICS codes) :

17.140.20 : Noise emitted by machines and equipment
23.060.40 : Pressure regulators
25.040.40 : Industrial process measurement and control

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