NBN EN 60534-5 : 2005

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Specification
5 Marking symbols
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Specifies mandatory and supplementary markings of control valves. Some mandatory markings may be inappropriate for some valves of special design, and some supplementary markings may be appropriate only to specific types of control valves.