# ISO 4411:1986 — Withdrawn and superseded ISO standards For ISO 4411:1986, item title is Hydraulic fluid power — Valves — Determination of pressure differential/flow characteristics; status code is 9599; successor is ISO/CD 4411 | ISO 4411:2008; withdrawn / published date is 1986-08-28, recorded from its source on 2026-08-05. - **Identifier:** ISO 4411:1986 _(verified: appears in the quote below)_ - **Item title:** Hydraulic fluid power — Valves — Determination of pressure differential/flow characteristics _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CD 4411 | ISO 4411:2008 - **Withdrawn / published date:** 1986-08-28 _(verified: appears in the quote below)_ ## What the source says > 10315,IS,,ISO 4411:1986,Hydraulic fluid power — Valves — Determination of pressure differential/flow characteristics,Transmissions hydrauliques — Appareils de distribution — Détermination des caractéristiques pression différentielle/débit,1986-08-28,1,['23.100.50'],ISO/TC 131/SC 5,9599,,"[28056,43559]","['en','fr']",11,"

Specifies determination methods, requirements for test installations, procedures, and presentation of results. May also be applied to other fluid power components where similar conditions apply. Accuracy of measurement is divided into three classes (A,B, and C) which are explained in annex A. Pipe loss is given in annex B. Guidance as to the use of practical units for the ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).