EN 12567:2000

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Tests and design requirements
  4.1 Tests
  4.2 Consideration of thermal conditions in steady state
  4.3 Consideration of thermal conditions in transient state
  4.4 Protection against thermal expansion of LNG
  4.5 Cryogenic neck extension
  4.6 Sealing devices for stem or shaft
  4.7 Assembly of valve (with the exception of the connection
       to the pipework)
  4.8 Connections to the pipework
  4.9 External protection
  4.10 Pressure retaining metal parts
  4.11 Electro-chemical effects
5 Functional requirements and tests
  5.1 General
  5.2 Electrical continuity
  5.3 Mechanical strength of the shell
  5.4 Endurance
  5.5 Fire resistance
  5.6 Seat leak tightness
  5.7 Operability
  5.8 Number of turns
  5.9 Attachment of actuator to the valve
  5.10 Manually operated valve
  5.11 Stems or shafts
  5.12 Cryogenic product acceptance
6 Marking
7 Preparation for storage and transportation
8 Information to be provided by the supplier
Annex A (normative) Thermal shock test
Annex B (normative) Endurance tests
Annex C (normative) Range of DN for type tests
Annex D (normative) Range of PN and Class for type tests
Annex E (normative) Low temperature acceptance test
Annex F (normative) Marking for sealing direction

This European Standard specifies the general performance requirements of isolating valves (gate valves, globe valves, plug and ball valves and butterfly valves) used in the production, storage, transmission (by pipeline, rail, road or sea) of Liquefied Natural Gas (LNG). LNG filling valves for vehicule refuelling systems are excluded from the scope of this standard. DN range from DN 8 to DN 1000. PN range from PN 16 to PN 100. Class range from Class 150 to Class 900. Temperature range from - 196 °C to + 60 °C.