FCI 84-1 : 1985(R2013)

Foreword
1 Purpose
2 Definition
3 Appendix

Specifies the valve flow coefficient C[v] commonly used for the purpose of calculating valve flow capacity or leakage in metric terminology to meet the growing need for attention to the metric system and the international system of units (SI) in particular, in the preparation of future standards and as an aid to the international acceptance of existing US standards.