I.S. EN 16304:2013

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Units of measurement and test conditions
6 Construction requirements
7 Performance
8 EMC/Electrical requirements
9 Marking, installation and operating instructions
Annex A (informative) - Gas connections in common
        use in the various countries
Annex B (informative) - Leak-tightness test - volumetric
        method
Annex C (informative) - Leak-tightness test - pressure
        loss method
Annex D (normative) - Conversion of pressure loss into
        leakage rate
Annex E (normative) - Electrical/electronic component
        fault modes
Annex F (normative) - Additional requirements for safety
        accessories and pressure accessories as defined
        in EU Directive 97/23/EC
Annex G (normative) - Materials for pressurised parts
Annex H (informative) - Additional materials for
        pressurised parts
Annex I (normative) - Requirements for controls used
        in DC supplied gas burners and gas burning
        appliances
Annex ZA (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 2009/142/EC
         relating to appliances burning gaseous fuels
Bibliography

Defines the safety, construction and performance requirements for automatic vent valves for use with gas burners, gas appliances and similar use, hereafter referred to as 'valves'.