This standard specifies marking information, labeling pattern, labeling methods and dimensions, valves paint colours of all kinds of general purpose valves.
This standard is applicable to all kinds of general purpose valves.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 12220 General purpose industrial valves — Marking (GB/T 12220-1989, idt ISO 5209:1977)