Foreword
1 Scope
2 Normative references
3 Definitions
4 Units of measurement
5 Construction requirements
5.1 General
5.2 Materials
5.3 Connections
5.4 Seals for glands for moving parts
5.5 Pressure test nipples
6 Performance requirements
6.1 General
6.2 External leak-tightness
6.3 Torsion and bending
6.4 Durability
6.5 Zero governor performance
6.6 Endurance
6.7 Lock-up pressure
6.8 Response time
7 Test methods
7.1 Mounting position
7.2 Test conditions
7.3 External leak-tightness
7.4 Torsion and bending
7.5 Durability
7.6 Zero governor performance test
7.7 Pressure drop (fully open)
7.8 Endurance
7.9 Lock-up pressure
7.10 Dynamic response test
8 Marking, installation and operating instructions
8.1 Marking
8.2 Installation, operating and servicing instructions
8.3 Warning notice
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other provisions
of EU Directives