EN 14817:2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations
  3.1 Terms and definitions
  3.2 Symbols and abbreviations
4 Documentation
  4.1 Introduction
  4.2 Documents to be provided by the customer
  4.3 Documents to be provided by the supplier
5 Graphical symbols
6 Working conditions
  6.1 General
  6.2 Climatic and atmospheric condition
  6.3 Environmental conditions
  6.4 Operation
  6.5 Mechanical conditions
7 Product definition
  7.1 General
  7.2 Resistance to operating conditions
      7.2.1 Extreme temperatures
      7.2.2 Water penetration
      7.2.3 Penetration of external solid bodies
      7.2.4 Mechanical impacts
      7.2.5 Projection of ballast
      7.2.6 Corrosion
      7.2.7 Reaction to fire
      7.2.8 Other conditions
  7.3 Physical characteristics
      7.3.1 Material
      7.3.2 Mass
      7.3.3 Appearance
      7.3.4 Air-tightness
      7.3.5 Fatigue behaviour
  7.4 Geometrical and dimensional characteristics
  7.5 Functional characteristics
      7.5.1 General
      7.5.2 Air flow
      7.5.3 Pressure drop
      7.5.4 Filtering performance
      7.5.5 Operating pressure
8 Verification and test methods
  8.1 General
      8.1.1 Test conditions
      8.1.2 Test installation
      8.1.3 Definition and preparation of test pieces
  8.2 Verification of resistance to the operating conditions
      8.2.1 Extreme temperatures
      8.2.2 Water penetration
      8.2.3 Penetration of external solid bodies
      8.2.4 Mechanical impacts
      8.2.5 Projection of ballast
      8.2.6 Corrosion
      8.2.7 Reaction to fire
      8.2.8 Other conditions
  8.3 Verification of physical characteristics
      8.3.1 Material
      8.3.2 Mass
      8.3.3 Appearance
      8.3.4 Air-tightness
      8.3.5 Fatigue behaviour
  8.4 Verification of geometrical and dimensional
      characteristics
  8.5 Verification of functional characteristics
      8.5.1 General
      8.5.2 Air flow
      8.5.3 Pressure drop
      8.5.4 Filtering performance
      8.5.5 Operating pressure
9 Marking
Annex A (informative) Traceability, qualification and
                      quality surveillance
  A.1 Traceability
  A.2 Qualification of the supplier's production factory
  A.3 Product approval and qualification
      A.3.1 Approval
      A.3.2 Qualification
  A.4 Inspection and quality surveillance
Bibliography

This standard specifies:- the characteristics the air brake control elements shall have and the tests to be carried out;- the guidelines for drafting the approval procedure applied by the customer;- the guidelines for drafting the qualification procedure for the product based on the requirementsspecified;- the guidelines for drafting the quality surveillance provisions for the manufacture of the air springcontrol elements.The requirements of this standard are applicable to air spring control elements having to equip rail vehiclesoperating on a reserved track under permanent guidance without any distinction between the nature or theroute of the track.It covers complete control elements. It is essential that the various components are defined by particularspecifications.This standard specifies:- the differential valves;- the filters;- the levelling valves;- the non-return valves;- the minimum pressure valves;- the pressure-reducing valves;- the end stop valves;- the isolating valves.This standard does not take into account the other air suspension control elements such as the installation ofpipes, pipework elements and air production elements.