Foreword
Introduction
1 Scope
2 Normative references
3 Principle of the determination of valve outlets
4 Determination of connection
5 Marking
6 Allocation of connections
Annex A (normative) - Gas groups
Annex B (normative) - Connections
Annex C (normative) - Use of connection nuts
requiring tools
Annex D (informative)
Bibliography