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The flow factor is the metric equivalent of Flow coefficient. In more practical terms, the ''flow factor'' Kv is the rate of flow of cold water in cubic metres per hour at a pressure drop of one kilogram per square centimetre across the valve.〔ISBN 978-1-4005-2712-0 Flow of fluids through valves and fittings, Crane Co.〕 Kv can be calculated using: where: Kv = flow factor F = Rate of flow (cubic meters per hour). SG = Relative Specific gravity of fluid with reference to water(Water = 1). ΔP = Pressure drop across valve (1 bar or 100kPa). Kv is commonly used in Europe and Asia. Kv can be calculated using the equation 〔(Control Valve Handbook ) Search Chapter 5.〕 : ==References== de:Kv-Wert 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Kv (flow factor)」の詳細全文を読む スポンサード リンク
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