NS EN 14601 : 2005 + A1 2010

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
  4.1 General
  4.2 Operating conditions
  4.3 Functional characteristics
      4.3.1 General
      4.3.2 Open and closed positions
      4.3.3 Lubrication
      4.3.4 Venting port
      4.3.5 Torque
      4.3.6 Spindle handle of the end cock
      4.3.7 Fall time
      4.3.8 Leakage
      4.3.9 Vacuum withstanding
      4.3.10 Pneumatic shocks
  4.4 Constructional characteristics
      4.4.1 External appearance
      4.4.2 Connections
      4.4.3 Space envelope
      4.4.4 Mechanical shocks
      4.4.5 Resistance to torque
      4.4.6 Life expectancy
5 Type test methods
  5.1 Sampling for type test
  5.2 Test requirements
  5.3 Test procedure
      5.3.1 Principle
      5.3.2 Check of physical and geometrical
             characteristics
      5.3.3 Measurement of the operating torque
      5.3.4 Measurement of the pressure fall time
      5.3.5 Hydraulic test (water pressure) of the end
             cock body at given pressure
      5.3.6 Operating test under air flow condition
      5.3.7 Pneumatic test of the isolating device at given
             pressures and temperatures
      5.3.8 Endurance at ambient temperature with reduced
             air flow
      5.3.9 Measurement of the operating torque drift
      5.3.10 Vibration test
      5.3.11 Resistance to shock test
      5.3.12 Vacuum test
      5.3.13 Corrosion test
      5.3.14 Resistance to torque:
      5.3.15 Examination
  5.4 Approval validity
  5.5 Type test report
6 Homologation
  6.1 General
      6.1.1 Procedure
      6.1.2 Pass/fail criteria
  6.2 Homologation test report
7 Routine tests
8 Designation
9 Marking
Annex A (normative) Dimensions of end cocks
Annex ZA (informative) Relationship between this European
                       Standard and the Essential
                       Requirements of EU Directive 96/48
ANNEX ZB (informative) Relationship between this European
                       Standard and the Essential
                       Requirements of EU Directive 2001/16
Bibliography

Describes requirements for the design, dimensions, testing and certification (qualification and/or homologation), and marking. Applies to manually operated end cocks designed to cut-off the brake pipe and the main reservoir pipe of the air brake and compressed air system of rail vehicles; without taking the type of vehicles and track-gauge into consideration.