Abstract Preview

Specifies a method for testing the fatigue strength and performance of thermoplastic valves incorporated in a valve assembly with its obturator mechanism under pressure. Repeated opening and closing shall be performed for as many cycles and using the torque as specified by the particular product standard.


General information

  • Status :  Published
    Publication date : 1989-06
  • Edition : 1
    Number of pages : 2
  • :
    ISO/TC 138/SC 7
    Valves and auxiliary equipment of plastics materials
  • 23.060.01
    Valves in general
    83.140.30
    Plastics pipes and fittings for non fluid use

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Life cycle

A standard is reviewed every 5 years



Revisions / Corrigenda

  • Now under review
    ISO 8659:1989
  • Will be replaced by
    ISO/FDIS 8659

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