CJ/T 394-2012 in English

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