# ISO 3966:2020 — Withdrawn and superseded ISO standards

For ISO 3966:2020, item title is Measurement of fluid flow in closed conduits — Velocity area method using Pitot static tubes; status code is 9599; successor is ISO 3966:2025; withdrawn / published date is 2020-07-20, recorded from its source on 2026-08-05.

- **Identifier:** ISO 3966:2020 _(verified: appears in the quote below)_
- **Item title:** Measurement of fluid flow in closed conduits — Velocity area method using Pitot static tubes _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 3966:2025
- **Withdrawn / published date:** 2020-07-20 _(verified: appears in the quote below)_

## What the source says

> 75508,IS,,ISO 3966:2020,Measurement of fluid flow in closed conduits — Velocity area method using Pitot static tubes,Mesurage du débit des fluides dans les conduites fermées — Méthode d'exploration du champ des vitesses au moyen de tubes de Pitot doubles,2020-07-20,3,['17.120.10'],ISO/TC 30/SC 5,9599,[50626],[86000],"['en','fr']",55,"<p>This document specifies a method for the determination in a closed conduit of the volume rate of flow of a regular flow</p><p>a) of a fluid of substantially constant density or corresponding to a Mach number not exceeding 0,25,</p><p>b) with substantially uniform stagnation temperature across the measuring cross-section,</p><p>c) running full in the con

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).