ANSI/ISA-75.02.01:2008

1 Scope
2 Purpose
3 Nomenclature
4 Test system
   4.1 General description
   4.2 Test specimen
   4.3 Test section
   4.4 Throttling valves
   4.5 Flow measurement
   4.6 Pressure taps
   4.7 Pressure measurement
   4.8 Temperature measurement
   4.9 Travel measurement
   4.10 Installation of test specimen
   4.11 Accuracy of test
5 Test fluids
   5.1 Incompressible fluids
   5.2 Compressible fluids
6 Test procedure - incompressible fluids
   6.1 Valve flow coefficient, C, test procedure
   6.2 Liquid pressure recovery factor, F[L], Test procedure
   6.3 Piping geometry factor, FP, test procedure
   6.4 Combination (product) of liquid pressure recovery
        factor F[L] and piping geometry factor F[P], F[LP]
        test procedure
   6.5 Reynolds Number factor, F[R], test procedure
   6.6 Liquid critical pressure ratio factor, F[F], test
        procedures
7 Data evaluation procedure - incompressible fluids
   7.1 C Calculation
   7.2 F[L] Calculation
   7.3 F[P] Calculation
   7.4 F[LP] Calculation
   7.5 F[R] Calculation
   7.6 F[F] Calculation
8 Test procedure - compressible fluids
   8.1 C Test procedure
   8.2 x[T] Test proc
   8.3 Alternative test procedure for C and x[T]
   8.4 Piping geometry factor, F[P], test procedure
   8.5 x[TP] Test procedure
9 Data evaluation procedure - compressible fluids
   9.1 C Calculation
   9.2 x[T] Calculation
   9.3 F[P] Calculation
   9.4 x[TP] Calculation
10 Numerical cons
Annex A (informative) - Engineering data
Annex B (informative) -Tap location and setup diagrams
        for common field installations
Annex C (informative) - Derivation of the valve style
        modifier, F[d]
Annex D (informative) - Laminar flow test discussion
        and bibliography
Annex E (informative) - Long form F[L] test procedure
Annex F (informative) - Calculation of F[P] to help
        determine if pipe/valve port diameters are
        adequately matched
Annex G (informative) - Bibliography

provides detailed test procedures for determining control valve capacity and related flow coefficients for industrial process control valves handling Newtonian fluids, for which the viscous stresses arising from its flow are at every point linearly correlated to the local strain rate. It supports the sizing equations in ANSI/ISA-75.01.01 by specifying methods to measure key parameters such as valve flow coefficient (C), liquid pressure recovery factors (FL, FLP), Reynolds number factor (FR) that measures fluid flow, critical pressure ratio factor (FF), piping geometry factor (FP), pressure drop ratio factors (xT, xTP) and valve style modifier (Fd). This standard covers both incompressible and compressible fluid testing, describing required test systems, specimen installation, instrumentation accuracy and data evaluation techniques. It includes guidance on test fluids, test section setup, pressure tap placement and flow measurement, along with annexes offering engineering data, example setups, derivations, extended test procedures and calculation aids. ANSI/ISA-75.02.01 is designed to promote consistency and precision in valve capacity testing, thereby aiding in dependable valve sizing and selection within process industries.