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IEC 60534-8-3

Industrial-Process Control Valves - Part 8-3: Noise Considerations - Control Valve Aerodynamic Noise Prediction Method

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Organization: IEC
Publication Date: 1 July 2000
Status: inactive
Page Count: 122
ICS Code (Pressure regulators): 23.060.40
ICS Code (Noise emitted by machines and equipment): 17.140.20
ICS Code (Industrial process measurement and control): 25.040.40
scope:

Scope and limitations

This part of IEC 60534 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.

This standard addresses only the noise generated by aerodynamic processes in valves and in the connected piping. It does not consider any noise generated by reflections, mechanical vibrations, unstable flow patterns and other unpredictable behaviour.

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.

This method is valid only for steel and steel alloy pipes (see equations (38) and (40) in 5.6).

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.

For limitations on special low noise trims not covered by this standard, see 6.5. When the Mach number in the valve outlet exceeds 0,3 for standard trim or 0,2 for low noise trim, the procedure in clause 7 is used.

The Mach number limits in this standard are as follows:

Document History

November 1, 2010
Industrial-process control valves – Part 8-3: Noise considerations – Control valve aerodynamic noise prediction method
This part of IEC 60534 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...
IEC 60534-8-3
July 1, 2000
Industrial-Process Control Valves - Part 8-3: Noise Considerations - Control Valve Aerodynamic Noise Prediction Method
Scope and limitations This part of IEC 60534 establishes a theoretical method to predict the external sound-pressure level generated in a control valve and within adjacent pipe expanders by the flow...
January 1, 1995
Industrial-Process Control Valves - Part 8: Noise Considerations - Section 3: Control Valve Aerodynamic Noise Prediction Method
A description is not available for this item.

References

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