Foreword
1 Scope
2 Normative references
3 Definitions
4 Requirements
4.1 Classification
4.2 Design
4.3 Functional characteristics
5 Test procedures
5.1 Production pressure testing
5.2 Seat leakage rates
6 Assessment of conformity
7 Designation
8 Marking
8.1 General
8.2 Body marking
8.3 Supplementary markings
9 Preparation for storage and transportation
9.1 Protection
9.2 Obturator position
9.3 Body ends
Annex A (normative) Materials
Annex B (normative) Pressure/temperature ratings
Annex C (normative) Determination of angular movement
of operating element - Method of test
Annex ZA (informative) Essential safety requirements
Clauses of this European
Standard addressing essential
requirements or other
provisions of EU directives
Bibliography