# ISO 10931-4:1997 — Withdrawn and superseded ISO standards For ISO 10931-4:1997, item title is Plastics piping systems for industrial applications — Poly(vinylidene fluoride) (PVDF) — Part 4: Valves; status code is 9599; successor is ISO 10931:2005; withdrawn / published date is 1997-11-13, recorded from its source on 2026-08-05. - **Identifier:** ISO 10931-4:1997 _(verified: appears in the quote below)_ - **Item title:** Plastics piping systems for industrial applications — Poly(vinylidene fluoride) (PVDF) — Part 4: Valves _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 10931:2005 - **Withdrawn / published date:** 1997-11-13 _(verified: appears in the quote below)_ ## What the source says > 1523,IS,,ISO 10931-4:1997,Plastics piping systems for industrial applications — Poly(vinylidene fluoride) (PVDF) — Part 4: Valves,Systèmes de canalisation en matières plastiques pour les applications industrielles — Poly(fluorure de vinylidène) (PVDF) — Partie 4: Robinetterie,1997-11-13,1,"['23.060.01','83.140.30']",ISO/TC 138/SC 7,9599,,[36773],"['en','fr']",7, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).