This section of IEC 60534-2 is applicable to industrial-process control valves and provides the flow capacity test procedures for determining the following variables used in the equations given in IEC 60534-2-1 and IEC 60534-2-2:
a) flow coefficient C;
b) liquid pressure recovery factor without attached fittings FL;
c) combined liquid pressure recovery factor and piping geometry factor of a control valve with attached fittings FLP;
d) piping geometry factor FP;
e) pressure differential ratio factors xT and xTP;
f) valve style modifier Fd,
g) Reynolds number factor FR.
IEC 60534-2-3:1997 history
2015IEC 60534-2-3:2015 Industrial-process control valves - Part 2-3: Flow capacity - Test procedures
1997IEC 60534-2-3:1997 Industrial-process control valves - Part 2-3: Flow capacity - Test procedures
1983IEC 60534-2-3:1983 Industrial-process control valves. Part 2 : Flow capacity. Section three - Tests procedures