标准摘要
[中文适用范围]： ISO 4126 的这一部分规定了先导式安全阀的一般要求，无论其设计用于何种流体。 在所有情况下，操作都是由受保护系统中的流体执行的。 它适用于阀门流通直径为 4 毫米及以上、在设定压力为 0.1 巴表压及以上的先导式安全阀。 对温度没有限制。 这是一个产品标准，不适用于先导式安全阀的应用。 [外文原描述]： ISO 4126-4:2013 specifies general requirements for pilot operated safety valves, irrespective of the fluid for which they are designed. In all cases, the operation is carried out by the fluid in the system to be protected. It is applicable to pilot operated safety valves having a valve flow diameter of 4 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature. ISO 4126-4:2013 is a product standard and it is not applicable to applications of pilot operated safety valves.
英文名称Safety devices for protection against excessive pressure — Part 4: Pilot operated safety valves