# ISO 407:1991 — Withdrawn and superseded ISO standards For ISO 407:1991, item title is Small medical gas cylinders — Pin-index yoke-type valve connections; status code is 9599; successor is ISO/DIS 407 | ISO 407:2004; withdrawn / published date is 1991-12-05, recorded from its source on 2026-08-05. - **Identifier:** ISO 407:1991 _(verified: appears in the quote below)_ - **Item title:** Small medical gas cylinders — Pin-index yoke-type valve connections _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/DIS 407 | ISO 407:2004 - **Withdrawn / published date:** 1991-12-05 _(verified: appears in the quote below)_ ## What the source says > 4410,IS,,ISO 407:1991,Small medical gas cylinders — Pin-index yoke-type valve connections,Petites bouteilles à gaz médicaux — Raccords de robinets du type à étrier avec ergots de sécurité,1991-12-05,2,['11.040.10'],ISO/TC 58/SC 2,9599,"[4411,4409]","[25394,40148]","['en','fr']",20,"

Specifies: basic dimensions, requirements for alternative designs, dimensions and positions for the holes and pins for the outlet connections. This second edition cancels and replaces the first edition (1983).

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).