NS EN ISO 10434 : 1ED 2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Pressure/temperature ratings
5 Design
6 Materials
7 Testing, inspection and examination
8 Marking
9 Preparation for dispatch
Annex A (informative) Information to be specified by
                      the purchaser
Annex B (informative) Identification of valve terms
Bibliography

Defines the requirements for heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions would indicate a need for full port openings, heavy wall sections and large stem diameters.