標準號：BS ISO 9635-4-2006
中文標準名稱：農業灌溉設備.灌溉閥.空氣閥
英文標準名稱：Agricultural irrigation equipment - Irrigation valves - Air valves
標準類型：B91;J16
發布日期：2007/2/28 12:00:00
實施日期：2007/2/28 12:00:00
中國標準分類號：B91;J16
國際標準分類號：65.060.35
適用范圍：This part of ISO 9635 specifies construction and performance requirements and test methods for air valves, intended for operation in irrigation systems with water at temperatures not exceeding 60 °C, which can contain fertilizers and other chemicals of the types and concentrations used in agriculture. It is applicable to hydraulically operated air irrigation valves of DN 15 (1/2 inch) diameter or greater, designed to be directly operated, i.e. the force is applied to the obturator by the float, either directly or via a mechanical linkage. The valves can be operated by a force applied through an adjustable pilot valve.