# ISO 4401:1994 — Withdrawn and superseded ISO standards

For ISO 4401:1994, item title is Hydraulic fluid power — Four-port directional control valves — Mounting surfaces; status code is 9599; successor is ISO 4401:2005; withdrawn / published date is 1994-12-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4401:1994 _(verified: appears in the quote below)_
- **Item title:** Hydraulic fluid power — Four-port directional control valves — Mounting surfaces _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4401:2005
- **Withdrawn / published date:** 1994-12-15 _(verified: appears in the quote below)_

## What the source says

> 10306,IS,,ISO 4401:1994,Hydraulic fluid power — Four-port directional control valves — Mounting surfaces,Transmissions hydrauliques — Distributeurs à quatre orifices — Plan de pose,1994-12-15,2,['23.100.50'],ISO/TC 131/SC 5,9599,[10305],[33366],"['en','fr']",18,<p>Cancels and replaces the first edition (1980). Specifies the dimensions and other data relating to surfaces on which four-port hydraulic directional control valves are mounted in order to ensure their interchangeability. Applies to mounting surfaces of these valves which represent current practice.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).