本文件适用于DN 15及以上、由金属材料制成的化工和石化装置阀门。它包含了相关欧洲产品标准（如EN 593、EN 1349）和EN 16668中包含的附加要求。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document applies to valves of DN 15 and larger, made of metallic materials for chemical and petrochemical plants. It contains additional requirements to those contained in the relevant European product standards (e.g. EN 593, EN 1349) and EN 16668.All current amendments available at time of purchase are included with the purchase of this document.