# ISO 8659:1989 — Withdrawn and superseded ISO standards

For ISO 8659:1989, item title is Thermoplastics valves — Fatigue strength — Test method; status code is 9599; successor is ISO 8659:2020; withdrawn / published date is 1989-06-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 8659:1989 _(verified: appears in the quote below)_
- **Item title:** Thermoplastics valves — Fatigue strength — Test method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 8659:2020
- **Withdrawn / published date:** 1989-06-15 _(verified: appears in the quote below)_

## What the source says

> 16039,IS,,ISO 8659:1989,Thermoplastics valves — Fatigue strength — Test method,Robinets en matériaux thermoplastiques — Résistance à la fatigue — Méthode d'essai,1989-06-15,1,"['23.060.01','83.140.30']",ISO/TC 138/SC 7,9599,,[74740],"['en','fr']",2,<p>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.</p>

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).