本文件规定了通用工业阀门强制性和可选标记的要求。它定义了在车身、法兰、识别牌或任何其他位置上应用标记的方法。 本文件与阀门产品标准或阀门性能标准的规定要求一并考虑。 塑料阀门的标记要求不在本文件范围内。

This document specifies the requirements for the mandatory and optional markings of general purpose industrial valves. It defines the method of applying the markings, on the body, on a flange, on an identification plate or any other location. This document is considered in conjunction with the specified requirements of the valve product standards or valve performance standards. The marking requirements for plastic valves are not within the scope of this document.