Industrial-process control valves - Part 2: Flow capacity; section 2: Sizing equations for compressible fluid flow under installed conditions (IEC 60534-2-2:1980); German version EN 60534-2-2:1993— 12 стр.
Industrial-process control valves - Part 8: Noise considerations; Section 1: Laboratory measurement of noise generated by aerodynamic flow through control valves (IEC 60534-8-1:1986); German version EN 60534-8-1:2000— 16 стр.
Industrial-process control valves - Part 1: Control valve terminology and general considerations (IEC 60534-1:1987); German version EN 60534-1:1993— 11 стр.
