# ISO 4126-4:2004 — Withdrawn and superseded ISO standards

For ISO 4126-4:2004, item title is Safety devices for protection against excessive pressure — Part 4: Pilot-operated safety valves; status code is 9599; successor is ISO 4126-4:2013; withdrawn / published date is 2004-02-27, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4126-4:2004 _(verified: appears in the quote below)_
- **Item title:** Safety devices for protection against excessive pressure — Part 4: Pilot-operated safety valves _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4126-4:2013
- **Withdrawn / published date:** 2004-02-27 _(verified: appears in the quote below)_

## What the source says

> 35405,IS,,ISO 4126-4:2004,Safety devices for protection against excessive pressure — Part 4: Pilot-operated safety valves,Dispositifs de sécurité pour protection contre les pressions excessives — Partie 4: Soupapes de sûreté pilotées,2004-02-27,1,['13.240'],ISO/TC 185,9599,"[22788,13162]",[50827],"['en','fr']",26,"<p>ISO 4126-4:2003 specifies general requirements for pilot operated safety valves, other than those covered in ISO 4126-1, irrespective of the fluid for which they are designed. In all cases, the operation is carried out by the fluid in the system to be protected.</p><p>ISO 4126-4:2003 is applicable to pilot operated safety valves having a valve flow diameter of 6 mm and above whi

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).