Foreword
1. Scope
2. Normative references
3. Terms and definitions
4. Requirements
4.1 Design
4.1.1 Materials
4.1.2 Pressure/temperature ratings
4.1.3 Dimensions
4.1.4 Operation
4.1.5 Construction
4.2 Functional characteristics
4.2.1 Shell design strength
4.2.2 Seat leakage
4.2.3 Operating element
5. Test methods
6. Inspection
7. Designation
8. Marking, preparation for storage and transportation
8.1 Marking
8.1.1 General
8.1.2 Additional markings
8.2 Preparation for storage and transportation
8.2.1 Corrosion
8.2.2 Ends
Annex A (normative) Cast iron and copper alloy shell
materials
Annex B (informative) Information to be supplied by the
purchaser
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other
provisions of EU Directives