# ISO 8426:2008 — Withdrawn and superseded ISO standards

For ISO 8426:2008, item title is Hydraulic fluid power — Positive displacement pumps and motors — Determination of derived capacity; status code is 9599; successor is ISO 8426-1:2025 | ISO 8426-2:2025 | ISO/WD 8426; withdrawn / published date is 2008-01-22, recorded from its source on 2026-08-05.

- **Identifier:** ISO 8426:2008 _(verified: appears in the quote below)_
- **Item title:** Hydraulic fluid power — Positive displacement pumps and motors — Determination of derived capacity _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 8426-1:2025 | ISO 8426-2:2025 | ISO/WD 8426
- **Withdrawn / published date:** 2008-01-22 _(verified: appears in the quote below)_

## What the source says

> 40351,IS,,ISO 8426:2008,Hydraulic fluid power — Positive displacement pumps and motors — Determination of derived capacity,Transmissions hydrauliques — Pompes et moteurs volumétriques — Détermination de la cylindrée mesurée,2008-01-22,2,['23.100.10'],ISO/TC 131/SC 8,9599,[15604],"[85275,85276,74349]","['en','fr']",14,"<p>ISO 8426:2008 specifies the methods of determining the derived capacity of hydraulic fluid power positive displacement pumps and motors under steady-state conditions and at defined, continuous shaft rotational frequencies.</p><p>Units can be tested as a positive displacement pump, with mechanical energy applied to the shaft and hydraulic energy obtained at the outlet fluid c

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).