Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Design and specification
  4.1 General
  4.2 Materials
  4.3 Essential components
  4.4 Optional components
  4.5 Leak tightness
  4.6 Operating torque
  4.7 Opening torque
  4.8 Closing torque
5 Valve type test
  5.1 General
  5.2 Test procedure and test requirements
  5.3 External and internal tightness tests (Test nos. 2, 5,
       8, 11, 12, 13, 15, 16 and 17)
  5.4 Hydraulic pressure test (Test no. 1)
  5.5 External and internal tightness test (Test no. 2)
  5.6 Valve closure test (Test no. 3)
  5.7 Valve stem test (Test no. 4)
  5.8 External and internal tightness test (Test no. 5)
  5.9 Hand wheel fire exposure test (Test no. 6)
  5.10 Impact test (Test no. 7)
  5.11 External and internal tightness test (Test no. 8)
  5.12 Resistance to excessive closing torque test (Test no. 9)
  5.13 Resistance to excessive opening torque test (Test no. 10)
  5.14 External tightness test (Test no. 11)
  5.15 External and internal tightness test (Test no. 12)
  5.16 External and internal tightness test after ageing
       (Test no. 13)
  5.17 Endurance test (Test no. 14)
  5.18 External and internal tightness test (Test no. 15)
  5.19 External and internal tightness test - High
       temperature (Test no. 16)
  5.20 External and internal tightness test - Low
       temperature (Test no. 17)
  5.21 Examination of dismantled valves number 9 to 13
       (Test number 18)
  5.22 Acceptance criteria
6 Documentation/Test report
  6.1 Documentation
  6.2 Test report
7 Markings
Annex A (normative) Valve dimensions
Annex B (normative) Valves for cylinders up to and including
                      7,5 litre water capacity
Annex C (informative) Production testing and inspection
Annex D (normative) Special low temperature requirements for
                      valves
Bibliography