# ISO 7121:1986 — Withdrawn and superseded ISO standards For ISO 7121:1986, item title is Flanged steel ball valves; status code is 9599; successor is ISO 7121:2006; withdrawn / published date is 1986-04-24, recorded from its source on 2026-08-05. - **Identifier:** ISO 7121:1986 _(verified: appears in the quote below)_ - **Item title:** Flanged steel ball valves _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 7121:2006 - **Withdrawn / published date:** 1986-04-24 _(verified: appears in the quote below)_ ## What the source says > 13707,IS,,ISO 7121:1986,Flanged steel ball valves,"Robinets à tournant sphérique en acier, à brides",1986-04-24,1,['23.060.20'],ISO/TC 153,9599,,[43496],"['en','fr']",9,"

Specifies requirements for nominal pressure ranges from ISO PN10 to ISO PN100 and nominal sizes from DN10 to DN500. Contains definitions and figures to illustrate them. Gives tables for body wall thickness, body and port inside diameter, effective diameters, and drain tappings. Includes an annex for information to be specified by purchaser.

" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).