标准摘要
[中文适用范围]： ISO 9635 的这一部分规定了止回阀的结构和性能要求以及测试方法，止回阀适用于水温不超过 60 °C 的灌溉系统，其中可能含有农业中使用的肥料和其他类型和浓度的化学品。 它适用于直径 DN 15 或更大的液压止回灌溉阀，设计用于在全开和全关位置操作，但也可以在任何中间位置长时间操作。 [外文原描述]： ISO 9635-3:2014 specifies construction and performance requirements and test methods for check 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 check irrigation valves of DN 15 diameter or greater, designed to operate in the fully open and fully closed positions, but which can also operate for extended time periods in any intermediate position.
英文名称Agricultural irrigation equipment — Irrigation valves — Part 3: Check valves