Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Pressure/temperature ratings
5 Design
5.1 Body wall thickness
5.2 Bonnet wall thickness
5.3 Body dimensions
5.4 Bonnet dimensions
5.5 Bonnet-to-body joint
5.6 Gate
5.7 Yoke
5.8 Stem and stem nut
5.9 Packing and packing box
5.10 Bolting
5.11 Operation
5.12 Auxiliary connections
6 Materials
6.1 Materials other than trim materials
6.2 Trim
6.3 Repair
7 Testing, inspection and examination
7.1 Pressure tests
7.2 Inspection
7.3 Examination
7.4 Supplementary examination
8 Marking
8.1 Legibility
8.2 Body marking
8.3 Ring joint marking
8.4 Identification plate marking
9 Preparation for despatch
Annex A (informative) Information to be specified by the purchaser
Annex B (informative) Identification of valve terms
Bibliography