Rubber and plastics hoses - Determination of volumetric expansion

This document specifies a method for the determination of the volumetric expansion of rubber or plastics hoses under hydrostatic pressure. This document does not specify the dimensions of the test piece and the test pressure(s) as each of which is specified in the appropriate specification.

Tuyaux en caoutchouc ou en plastique — Détermination de l'expansion volumique

Le présent document spécifie une méthode de détermination de l’expansion volumique des tuyaux en caoutchouc ou en plastique sous pression hydrostatique. Ce document ne précise pas les dimensions de l'éprouvette et la (les) pression(s) d'épreuve, puisque chacune d'elles est spécifiée dans la spécification appropriée.

General Information

Status
Published
Publication Date
24-Nov-2021
Current Stage
6060 - International Standard published
Start Date
25-Nov-2021
Due Date
15-Mar-2022
Completion Date
25-Nov-2021

Relations

Effective Date
04-Sep-2021
Effective Date
17-Jul-2021

Overview

ISO 6801:2021 is an international standard published by the International Organization for Standardization (ISO) that specifies a method for determining the volumetric expansion of rubber and plastics hoses under hydrostatic pressure. This standard provides a reliable testing procedure essential to ensuring hose performance, particularly when the hoses are used to deliver specific fluid volumes where dimensional stability under pressure is critical.

Key aspects of ISO 6801:2021 include detailed guidelines for test apparatus setup, calibration, operation, and result expression to accurately measure how hoses expand volumetrically under pressure. The standard complements related hose specifications by focusing specifically on volumetric expansion rather than dimensional parameters or test pressures, which are left to the relevant product specifications.

Key Topics

  • Scope and Purpose
    ISO 6801:2021 defines a laboratory test method for measuring volumetric expansion of rubber or plastic hoses subjected to hydrostatic pressure. It ensures hoses maintain minimal capacity variation under service pressures.

  • Test Apparatus
    The apparatus consists of a pressure source, a system of smooth pipelines and valves, a burette for precise volume measurement, and a test section to hold the hose vertically without tension. The equipment must provide controlled pressure increase, as outlined by the standard.

  • Calibration
    The test rig must be calibrated using a steel hydraulic hose to determine correction factors accounting for the apparatus’s inherent expansion under test pressure, ensuring accurate hose volume measurements.

  • Test Procedure
    The method involves filling the apparatus with distilled, air-free water, applying specified hydrostatic pressure to the hose, measuring volume expansion via fluid displacement in the burette, and repeating tests for accuracy. The procedure includes specific requirements on pressure ramp rates, leak checking, and managing air bubbles.

  • Result Calculation
    Volumetric expansion is calculated as the corrected volume increase per meter length of hose, expressed in cm³/m. Optionally, results can be converted to percentage volume change if dimensional data are available.

  • Reporting Requirements
    The test report must include reference to ISO 6801:2021, hose description, specimen dimensions, test pressure, correction factor, volume measurements, and any deviations or anomalies observed.

Applications

ISO 6801:2021 is highly valuable for manufacturers, quality control laboratories, and end-users of rubber and plastics hoses in industries such as:

  • Hydraulics and Fluid Transport
    Ensures accurate volumetric flow and capacity under operating pressures.

  • Automotive and Aerospace
    Verifies hose performance for precise fluid delivery and system safety.

  • Industrial and Manufacturing Processes
    Confirms hoses meet strict dimensional stability criteria essential to process reliability.

  • Research and Development
    Provides a standardized method for comparing new hose materials and constructions for volumetric behavior.

By following ISO 6801:2021 protocols, stakeholders can prevent performance issues related to hose expansion such as flow inconsistencies, pressure losses, or premature hose failure.

Related Standards

ISO 6801:2021 should be used alongside complementary ISO standards for rubber and plastic hoses to achieve comprehensive testing and quality assurance, including:

  • ISO 1402 – Rubber and plastics hoses - Hydrostatic testing
    Defines pressure test methods referenced by ISO 6801 for setting test pressures.

  • ISO 8330 – Rubber and plastics hoses - Vocabulary
    Provides standard terms and definitions relevant to hose testing and quality control.

These related standards help maintain consistency in testing practices and terminology across the hose manufacturing and testing industry.


Keywords: ISO 6801:2021, volumetric expansion, rubber hoses, plastics hoses, hydrostatic pressure, hose testing, hose quality, volumetric stability, test apparatus calibration, fluid mechanics, hose performance standards.

Standard

ISO 6801:2021 - Rubber and plastics hoses — Determination of volumetric expansion Released:11/25/2021

English language
4 pages
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Standard

ISO 6801:2021 - Tuyaux en caoutchouc ou en plastique — Détermination de l'expansion volumique Released:11/25/2021

French language
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Frequently Asked Questions

ISO 6801:2021 is a standard published by the International Organization for Standardization (ISO). Its full title is "Rubber and plastics hoses - Determination of volumetric expansion". This standard covers: This document specifies a method for the determination of the volumetric expansion of rubber or plastics hoses under hydrostatic pressure. This document does not specify the dimensions of the test piece and the test pressure(s) as each of which is specified in the appropriate specification.

This document specifies a method for the determination of the volumetric expansion of rubber or plastics hoses under hydrostatic pressure. This document does not specify the dimensions of the test piece and the test pressure(s) as each of which is specified in the appropriate specification.

ISO 6801:2021 is classified under the following ICS (International Classification for Standards) categories: 23.040.70 - Hoses and hose assemblies. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 6801:2021 has the following relationships with other standards: It is inter standard links to ISO 6801:1983/Amd 1:2011, ISO 6801:1983. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase ISO 6801:2021 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.

Standards Content (Sample)


INTERNATIONAL ISO
STANDARD 6801
Second edition
2021-11
Rubber and plastics hoses —
Determination of volumetric
expansion
Tuyaux en caoutchouc ou en plastique — Détermination de
l'expansion volumique
Reference number
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 1
5 Calibration of apparatus .2
6 Procedure .3
7 Expression of results . 3
8 Test report . 4
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products,
Subcommittee SC 1, Rubber and plastics hoses and hose assemblies, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 218, Rubber and plastics hoses and
hose assemblies, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 6801:1983), which has been technically
revised. It also incorporates the Amendment ISO 6801:1983/Amd.1:2011.
The main changes compared to the previous edition are as follows:
— deletion of alcohol as pressurizing fluid;
— addition of Clause 3.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
When used for dispensing specific volumes of fluids, the volumetric capacity of a hose is often required
to vary by only small amounts at the dispensing pressure. This document describes a method of
checking that such requirements can be met.
v
INTERNATIONAL STANDARD ISO 6801:2021(E)
Rubber and plastics hoses — Determination of volumetric
expansion
WARNING — Persons using this document should be familiar with normal laboratory practice.
This document does not purport to address all of the safety problems, if any, associated with its
use. It is the responsibility of the user to establish appropriate safety and health practices.
1 Scope
This document specifies a method for the determination of the volumetric expansio
...


NORME ISO
INTERNATIONALE 6801
Deuxième édition
2021-11
Tuyaux en caoutchouc ou en
plastique — Détermination de
l'expansion volumique
Rubber and plastics hoses — Determination of volumetric expansion
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2021
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d'application .1
2 Références normatives .1
3 Termes et définitions . 1
4 Appareillage . 1
5 Étalonnage de l’appareillage . 3
6 Mode opératoire . 3
7 Expression des résultats . 4
8 Rapport d’essai . 4
iii
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l'ISO participent également aux travaux.
L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L'attention est attirée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l'élaboration du document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de
brevets reçues par l'ISO (voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion
de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles
techniques au commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 45, Élastomères et produits à base
d'élastomères, sous-comité SC 1, Tuyaux et flexibles en caoutchouc et en matière plastique, en collaboration
avec le comité technique CEN/TC 218, Tuyaux et flexibles en caoutchouc et en plastique, conformément à
l’Accord de coopération technique entre l’ISO et le CEN (Accord de Vienne).
Cette deuxième édition annule et remplace la première édition (ISO 6801:1983), qui a fait l’objet d’une
révision technique. Elle incorpore également l’Amendement ISO 6801:1983/Amd.1:2011.
Les principales modifications par rapport à l’édition précédente sont les suivantes:
— suppression de l'alcool comme liquide de mise sous pression;
— ajout de l’Article 3.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes
se trouve à l’adresse www.iso.org/members.html.
iv
Introduction
Lorsqu’il est utilisé pour délivrer des volumes spécifiques de fluides, il est souvent nécessaire qu’un
tuyau n‘ait que de faibles variations de sa capacité volumique à la pression de service. Le présent
document décrit une méthode pour vérifier que de telles exigences puissent être satisfaites.
v
NORME INTERNATIONALE ISO 6801:2021(F)
Tuyaux en caoutchouc ou en plastique — Détermination de
l'expansion volumique
AVERTISSEMENT — Il convient que l'utilisateur du présent document connaisse bien les
pratiques courantes de laboratoire. Le présent document n'a pas pour but de traiter tous les
problèmes de sécurité qui sont, le cas échéant, liés à son utilisation. Il incombe à l'utilisateur
d'établir des pratiques appropriées en matière d'hygiène et de sécurité.
1 Domaine d'applicati
...

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