BS EN 142:2002

Foreword
Introduction
1 Scope
2 Normative References
3 Terms and definitions
4 Description
5 Designation
6 Requirements
  6.1 General
  6.2 Ergonomics
  6.3 Design
  6.4 Materials
  6.5 Cleaning and disinfecting
  6.6 Resistance to temperature
  6.7 Flammability
  6.8 Demountable parts
  6.9 Replaceable components
  6.10 Head harness
  6.11 Connection
       6.11.1 General
       6.11.2 Thread connection according to EN 148-1
       6.11.3 Thread connection according to EN 148-2
  6.12 Inhalation valves and exhalation valves (if fitted)
       6.12.1 General
       6.12.2 Inhalation valve(s)
       6.12.3 Exhalation valve(s)
  6.13 Leaktightness
  6.14 Breathing resistance
       6.14,1 Mouthpiece assembly with thread connection
              according to EN 148-1
       6.14.2 Mouthpiece assembly with thread connection
              according to EN 148-2
  6.15 Nose clip
  6.16 Practical performance
7 Testing
  7.1 General
  7.2 Nominal values and tolerances
  7.3 Visual inspection
  7.4 Conditioning
  7.5 Flammability
  7.6 Head harness (pull test)
  7.7 Connection
  7.8 Exhalation valve (flow test)
  7.9 Exhalation valve housing (pull test)
  7.10 Exhalation valve leakage
       7.10.1 Samples
       7.10.2 Test equipment
       7.10.3 Test procedure
  7.11 Leaktightness
  7.12 Breathing resistance
  7.13 Practical performance
       7.13.1 General
       7.13.2 Walking test
       7.13.3 Work simulation test
8 Marking
9 Information supplied by the manufacturer
Annex A (informative) Marking
Annex ZA (informative) Clauses of this European
         Standard addressing essential requirements or other
         provisions of EU Directives

Pertains to mouthpiece assemblies for respiratory protective devices, except escape apparatus and diving apparatus. It also specifies minimum requirements for mouthpiece assemblies for use as part of respiratory protective devices.