NEN EN ISO 16136 : 2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
  4.1 Design
  4.2 Materials
  4.3 Pressure/temperature rating
  4.4 Dimensions
  4.5 Operation
  4.6 Functional characteristics
  4.7 Manufacture
  4.8 Other requirements
5 Test procedures
  5.1 Documentation of test results
  5.2 Initial type tests
6 Declaration of compliance
7 Designation
8 Marking and preparation for storage and transportation
  8.1 Marking and documentation
  8.2 Preparation for storage and transportation
Annex A (informative) Procurement information
Annex ZA (informative) Relationship between this International
          Standard and the Essential Requirements of EU Directive
          97/23 EC (PED)
Bibliography

Specifies requirements for the design, functional characteristics and manufacture of butterfly valves made of thermoplastics materials intended for isolating and control service, their connection to the pipe system, the body materials and their pressure/temperature rating between -40 degrees Celsius and +120 degrees Celsius, for a lifetime of 25 years, and also specifies their tests.