1 Subject Content and Application Scope
This standard specifies the structural type, technical requirements, test methods, marking, packaging, transport and storage of cast iron swing check valves.
This standard is applicable to gray cast iron and ductile cast iron swing check valves which are connected by flanges and whose nominal pressure is PN0.25~4.0MPa, nominal diameter is DN50~1800mm, temperature is less than or equal to 350℃ and working medium is steam, air and water (hereinafter referred to as check valves).
1 Subject Content and Application Scope
2 Normative References
3 Structural Types
4 Technical Requirements
5 Test Methods
6 Marking, Packaging, Transport and Storage
Additional Explanations
