BS EN 60534-8-2:1993 Industrial-process control valves - Noise considerations - Laboratory measurement of noise generated by hydrodynamic flow through control valves
This section of IEC 534-8 includes the method for measuring the sound pressure level due
to liquid flow through a control valve and the method 'for determining the characteristic
increase of noise due to the onset of cavitation. It also defines the equlpment, methods
and procedures for the laboratory measurement of the airborne sound needed to
determine these characteristics. The airborne sound includes that radiated from the
control valve and the associated piping configuration, íncluding fixed flow restrictions
through which the test fluid (water) is passing (see note i).
The primary purpose of this section of IEC 534-8 is to provide a method for determining
the characteristic increase of noise due to cavitation, including a method for measuring
noise generated in control valves by hydrodynamic flow. Methods of measuring the noise
radiated from the valve and associated test piping allows a comparison of various
measured data which is beneficial to the user and the manufacturer. The noise to be
measured takes into account the noise radiated from the control valve itself and the noise
generated by the valve but radiated from the associated piping system. The test data are
expressed as sound pressure levels of the valve under consideration using water as the
test fluid. Determination of sound power levels is beyond the scope of this section of
IEC 534-8. The nolse characteristics are useful for the following reasons:
a) to determine the characteristic pressure ratio factor xFz of a control valve;
b) to predict valve noise for given process conditions;
c) to compare the performance of different valves;
d) to plan measures for increasing senrice life and noise abatement.
BS EN 60534-8-2:1993 history
2012BS EN 60534-8-2:2012 Industrial-process control valves. Noise considerations. Laboratory measurement of noise generated by hydrodynamic flow through control valves
1991BS EN 60534-8-2:1991 Industrial-process control valves. Noise considerations. Laboratory measurement of noise generated by hydrodynamic flow through control valves