This standard specifies the terms and definitions, classification and types, structure, materials and connection, requirements, test methods, marking and warning label, inspection rules, packaging, transportation and storage of electro-magnetic emergency shut-off valve for gas (hereinafter referred to as valve).
This standard is applicable to electro-magnetic emergency shut-off valve for gas whose nominal dimension is not larger than DN 300, maximum operating pressure not larger than 0.4 MPa and working ambient temperature scope is - 20℃~60℃, and which is linked with urban gas safety control system.
Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Classification and Model 5 Structures, Materials and Connection 6 Requirements 7 Test Methods 8 Marking and User Warning Label 9 Inspection Rules 10 Packaging, Transportation and Storage Appendix A (Normative) Stored Closing Energy Module Appendix B (Normative) Air Tightness Test - Pressure Differential Method Appendix C (Normative) Conversion of Pressure Difference to Leakage Amount Appendix D (Informative) Valve Input/Output Relationship Bibliography
