This part of GB/T 17213 specifies the mandatory marking and supplementary marking of control valves. Some mandatory signs may not apply to some control valves with special structures, while some supplementary signs may only apply to special types of control valves. This section suggests that, unless otherwise agreed between the manufacturer and the buyer, the markings of various valves should comply with the provisions of this section.
GB/T 17213.5-2008 Referenced Document
EN 1333 Flanges and their joints - Pipework components - Definition and selection of PN
EN 19 Industrial valves - Marking of metallic valves*, 2023-11-15 Update
GB/T 17213.1 Industrial process control valves - Part 1: Terminology and general principles for control valves*, 2016-07-01 Update
GB/T 17213.5-2008 history
2008GB/T 17213.5-2008 Industrial-process control valves. Part 5:Marking
1998GB/T 17213.5-1998 Industrial-process control valves. Part 5: Marking