Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Type test
6 Performance classes
7 Reporting
8 Extension of qualification to untested valves
Annex A (normative) - Total leak rate measurement
Annex B (normative) - Leak measurement using
        the sniffing method
Annex C (informative) - Leak rate conversion (helium)
Bibliography

Abstract

Defines testing procedures for evaluation of external leakage of valve stem seals (or shaft) and body joints of isolating valves and control valves intended for application in volatile air pollutants and hazardous fluids.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	British Standards Institution
Pages
ISBN
Committee	PSE/18/1
Supersedes	03/116547 DC : DRAFT NOV 2003 14/30279051 DC : 0 16/30341108 DC : 0