標準號：ISO 9644-2008
中文標準名稱：農業灌溉設備.灌溉閥中的壓力損失.試驗方法
英文標準名稱：Agricultural irrigation equipment - Pressure losses in irrigation valves - Test method
標準類型：B91
發布日期：2008/7/1 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：B91
國際標準分類號：65.060.35
適用范圍：This International Standard specifies a test method for determining the pressure loss in agricultural irrigationvalves under steady-state conditions when water flows through them. The scope and accuracy of the valveperformance specifications presented will assist agricultural irrigation system designers in comparing pressurelosses through various types of valves.The measurement of pressure losses provides a means for determining the relationship between pressureloss and flow rate through the valve.This International Standard also describes the method of reporting pertinent test data.No attempt is made to define product use, design or applications.The test method is suitable for valves with equal inlet and outlet nominal sizes.NOTE Unless otherwise specified, the equations are expressed in the SI units recommended by ISO 1000.