This standard specifies the classification, requirements, test methods, inspection rules, marks and supply requirements of casting iron globe valves and lift check valves.
This standard is applicable to casting iron globe valves and lift check valves in female connection and flange connection with nominal pressure of PN10~PN16 and nominal dimension of DN15~DN200 at applicable temperature no higher than 200℃.
This standard is also applicable to the throttle valves.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction), 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.
GB/T 12233-2006 The following standards are cited：
