# ISO 9644:1993 — Withdrawn and superseded ISO standards

For ISO 9644:1993, item title is Agricultural irrigation equipment — Pressure losses in irrigation valves — Test method; status code is 9599; successor is ISO 9644:2008; withdrawn / published date is 1993-02-04, recorded from its source on 2026-08-05.

- **Identifier:** ISO 9644:1993 _(verified: appears in the quote below)_
- **Item title:** Agricultural irrigation equipment — Pressure losses in irrigation valves — Test method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9644:2008
- **Withdrawn / published date:** 1993-02-04 _(verified: appears in the quote below)_

## What the source says

> 17470,IS,,ISO 9644:1993,Agricultural irrigation equipment — Pressure losses in irrigation valves — Test method,Matériel agricole d'irrigation — Pertes de pression dans les vannes d'irrigation — Méthode d'essai,1993-02-04,1,['65.060.35'],ISO/TC 23/SC 18,9599,,[43992],"['en','fr']",6,<p>Specifies a test method under steady-state conditions when water flows through the valves. Also describes the method of reporting pertinent test data. The valve performance specifications presented are of such scope and accuracy as to assist irrigation system designers when comparing pressure losses through various types of irrigation valves. The measurement of pressure losses provides a means for determining t

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).