PREN 16668 : DRAFT 2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of valves
5 Additional requirements
Annex A (informative) - Classification based on PS and DN
Annex B (informative) - European harmonised standards
        for materials and components for shell parts
Annex C (informative) - European Approval of Materials
        (EAM)
Annex D (informative) - European harmonised standards
        for valves
Annex E (normative) - Non-destructive testing of steel
        Castings
Annex ZA (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 97/23/EC (PED)
Bibliography

Pertains to metallic valves as pressure accessories for industrial applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the Pressure Equipment Directive (PED) 97/23/EC and specifies minimum requirements applicable to design, manufacture, testing, materials and documentation.