# ISO 4126-1:1991 — Withdrawn and superseded ISO standards

For ISO 4126-1:1991, item title is Safety valves — Part 1: General requirements; status code is 9599; successor is ISO 4126-1:2004 | ISO/DIS 4126-1; withdrawn / published date is 1991-12-12, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4126-1:1991 _(verified: appears in the quote below)_
- **Item title:** Safety valves — Part 1: General requirements _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4126-1:2004 | ISO/DIS 4126-1
- **Withdrawn / published date:** 1991-12-12 _(verified: appears in the quote below)_

## What the source says

> 9879,IS,,ISO 4126-1:1991,Safety valves — Part 1: General requirements,Soupapes de sûreté — Partie 1: Prescriptions générales,1991-12-12,1,['13.240'],ISO/TC 185,9599,[9878],"[35889,25673]","['en','fr']",25,"<p>Specifies requirements for safety valves irrespective of the fluid for which they are designed. Applies to valves having a flow diameter of 9 mm and above, which are for use at set pressures of 1 bar gauge (0,1 MPa) and above.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).