EN ISO 16137:2006

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

ISO 16137:2006 specifies requirements for the design, functional characteristics and manufacture of check valves made of thermoplastics materials intended to allow the flow of liquid fluids through the valve in one direction only and to prevent backflow, 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. ISO 16137:2006 is applicable to valves to be installed in industrial pipe systems, irrespective of the field of application and the fluids to be conveyed.It is concerned with the range of DN 8, DN 10, DN 15, DN 20, DN 25, DN 40, DN 50, DN 65, DN 80, DN 100, DN 125, DN 150, DN 200, DN 250, DN 300, DN 350, DN 400, DN 500 and DN 600, and the range of PN 6, PN 10, PN 16, PN 25, and Class 150 and Class 300.