This standard specifies the structural type, technical requirements, test methods, inspection rules, marking, protection and storage of industrial diaphragm valves made of metallic materials.
This standard is applicable to diaphragm valves made of metallic materials whose nominal pressure is PN6~PN25 (not larger than PN 16 for gray cast iron), nominal dimension is DN10~DN400 and end connection type is flange; and diaphragm valves made of metallic materials whose nominal pressure is PN6~PN16, nominal dimension is DN8~DN80 and, end connection type is welding.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies
