General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 17213.9-2005
Scope
This part of GB/T 17213 applies to industrial process control valves, and provides flow capacity test procedures to determine the following variables used in the calculation formula given in GB/T 17213.2: a) flow coefficient C; b) liquid without attached pipe fittings Pressure recovery factor FL; c) Compound factor FLP with attached fitting liquid pressure recovery factor and pipe geometry factor; d) Pipe geometry factor FP; e) Pressure difference ratio coefficient xTxTP; f) Control valve type correction factor Fd; g) Reynolds number coefficient FR.
GB/T 17213.9-2005 Referenced Document
GB/T 17213.1-1998 Industrial-process control valves. Part 1: Control valve terminology and general considerations
GB/T 17213.14-2005 Industrial-process control valves.Part 8-2: Noise considerations.Laboratory of noise generated by hydrodynamic flow through control valves
GB/T 17213.2-2005 Industrial-process control valves.Part 2-1:Flow capacity.Sizing equations for fluid flow under installed conditions
GB/T 18271.1-2000 Process measurement and control devices--General methods and procedures for evaluating performance--Part 1: General considerations
GB/T 18271.2-2000 Process measurement and control devices-General methods and procedures for evaluating performance-Part 2:Tests under reference conditions
GB/T 17213.9-2005 history
2005GB/T 17213.9-2005 Industrial-process control valves.Part 2-3: Flow capacity.Test procedures