BS EN 161 : 2011

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 pressurized parts
Annex H (informative) - Additional materials for
        pressurized parts
Annex I (normative) - Requirements for controls used
        in DC supplied gas burners and gas burning
        appliances
Annex AA (normative) - Method for the determination
         of Performance Level (PL)
Annex BB (informative) - Model of a FMEA for valves
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

Describes the safety, construction and performance requirements for automatic shut-off valves for use with gas burners, gas appliances and similar use, hereafter referred to as 'valves'.