UNI EN 13152 : 2005

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Design and specification
   4.1 General
   4.2 Materials
       4.2.1 General
       4.2.2 Operating temperatures
       4.2.3 Copper alloys
       4.2.4 Non-metallic materials
   4.3 Essential components
       4.3.1 Valve operating mechanism
       4.3.2 Valve body
       4.3.3 Sealing mechanism
       4.3.4 Valve stem
       4.3.5 Valve outlet
   4.4 Optional components
       4.4.1 Pressure relief valve
       4.4.2 Eduction tube
       4.4.3 Excess flow device
       4.4.4 Non-return valve
       4.4.5 Sediment tube
   4.5 Valve connections
5 Valve type test
   5.1 General
   5.2 Test valves
   5.3 Test procedure
       5.3.1 Hydraulic pressure test
       5.3.2 Valve closure test
       5.3.3 External and internal tightness test
       5.3.4 Endurance test
       5.3.5 Simulated vacuum test
       5.3.6 Operation test
       5.3.7 Valve stem test
       5.3.8 Impact test
   5.4 Acceptance criteria
6 Markings
Annex A (normative) Valve dimensions
Annex B (informative) Production testing and inspection
Annex C (normative) Special requirements for cylinder valves
        under extreme low temperature conditions (minus 40
        degree C)
Bibliography

Refers to the requirements for design, specification and type testing for self-closing cylinder valves specifically for use with LPG.