IEC 60534-8-1:1986 Industrial-Process Control Valves Part 8: Noise Considerations Section One - Laboratory Measurement of Noise Generated by Aerodynamic Flow Through Control Valves (Edition 1.0)
2005IEC 60534-8-1:2005 Industrial-process control valves - Part 8-1: Noise considerations - Laboratory measurement of noise generated by aerodynamic flow through control valves
1986IEC 60534-8-1:1986 Industrial-Process Control Valves Part 8: Noise Considerations Section One - Laboratory Measurement of Noise Generated by Aerodynamic Flow Through Control Valves (Edition 1.0)