ISO/TS 16431:2002

Hydraulic fluid power — Assembled systems — Verification of cleanliness

ISO/TS 16431 defines a procedure for measuring and verifying a desired cleanliness level in an assembled hydraulic fluid power system upon its release from the production area.

Transmissions hydrauliques — Systèmes assemblés — Vérification de la propreté

L'ISO/TS 16341 décrit un mode opératoire de mesurage et de vérification du niveau de propreté souhaité dans un système de transmissions hydrauliques assemblé à sa sortie de fabrication.

Fluidna tehnika - Hidravlika - Montažni sistemi - Potrjevanje snažnosti

General Information

• Status: Withdrawn
• Publication Date: 12-Jun-2002
• Withdrawal Date: 12-Jun-2002
• ICS: 23.100.60 - Filters, seals and contamination of fluids
• Technical Committee: ISO/TC 131/SC 6 - Contamination control
• Drafting Committee: ISO/TC 131/SC 6/WG 3 - Component and system cleanliness
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 24-Jan-2012
• Ref Project: SIST ISO/TS 16431:2003 - Hydraulic fluid power -- Assembled systems -- Verification of cleanliness

Relations

• Revised: ISO 16431:2012 - Hydraulic fluid power — System clean-up procedures and verification of cleanliness of assembled systems
• Effective Date: 15-Apr-2008

Standards Content (Sample)

TECHNICAL ISO/TS
SPECIFICATION 16431
First edition
2002-06-01

Hydraulic fluid power — Assembled
systems — Verification of cleanliness
Transmissions hydrauliques — Systèmes assemblés — Vérification de
la propreté




Reference number
ISO/TS 16431:2002(E)
©
ISO 2002

---------------------- Page: 1 ----------------------
ISO/TS 16431:2002(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not
be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this
file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this
area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event
that a problem relating to it is found, please inform the Central Secretariat at the address given below.


©  ISO 2002
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body
in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.ch
Printed in Switzerland

ii © ISO 2002 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/TS 16431:2002(E)
Contents Page
Foreword.iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Test equipment.2
5 Sampling.2
6 Test procedure.2
7 Criteria for acceptance.4
8 Test report.4
9 Identification statement (reference to this Technical Specification).4
Annex A (informative) Form for reporting the verification of the cleanliness level of an assembled
hydraulic system .6
Annex B (informative) Example of a completed form for reporting the verification of the cleanliness
level of an assembled hydraulic system.7
Bibliography.8

© ISO 2002 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO/TS 16431:2002(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a technical
committee may decide to publish other types of normative document:
— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an
ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the
parent committee casting a vote;
— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a
vote.
An ISO/PAS or ISO/TS is reviewed after three years with a view to deciding whether it should be confirmed for a
further three years, revised to become an International Standard, or withdrawn. In the case of a confirmed ISO/PAS
or ISO/TS, it is reviewed again after six years at which time it has to be either transposed into an International
Standard or withdrawn.
Attention is drawn to the possibility that some of the elements of this Technical Specification may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TS 16431 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 6,
Contamination control.
Annexes A and B of this Technical Specification are for information only.
iv © ISO 2002 – All rights reserved

---------------------- Page: 4 ----------------------
ISO/TS 16431:2002(E)
Introduction
In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an
enclosed circuit.
The initial cleanliness level of a hydraulic system can affect its performance and useful life. Unless removed,
contaminants present after manufacture and assembly of a system may circulate through the system, causing
damage. To limit such damage, the fluid and internal surfaces of the hydraulic fluid power system must be cleaned
to an acceptable level.
While this Technical Specification describes a clean-up procedure that uses filters after final assembly of the
system, this practice is not a substitute for the use of good practices to achieve and maintain cleanliness prior to
final assembly.
© ISO 2002 – All rights reserved v

---------------------- Page: 5 ----------------------
TECHNICAL SPECIFICATION ISO/TS 16431:2002(E)

Hydraulic fluid power — Assembled systems — Verification of
cleanliness
1 Scope
This Technical Specification defines a procedure for measuring and verifying a desired cleanliness level in an
assembled hydraulic fluid power system upon its release from the production area.
NOTE It is recommended that components and parts used in such systems be clean prior to assembly; see ISO 18413 for
guidance.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this Technical Specification. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this Technical Specification are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 3722, Hydraulic fluid power — Fluid sample containers — Qualifying and controlling cleaning methods
ISO 4021, Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of
an operating system
1)
ISO 4407 , Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the
counting method using an optical microscope
ISO 5598, Fluid power systems and components — Vocabulary
ISO 11500, Hydraulic fluid power — Determination of particulate contamination by automatic counting using the
light extinction principle
3 Terms and definitions
For the purposes of this Technical Specification, the definitions given in ISO 5598 and the following apply:
3.1
clean-up filter
high efficiency filter capable of providing the required cleanliness
3.2
off-line loop filter
filter or other filtration device that is externally mounted and connected to the assembled fluid power system for the
purpose of providing fluid filtration then is removed from the system after verification of the system’s cleanliness

1) To be published. (Revision of ISO 4
...

SLOVENSKI STANDARD
SIST ISO/TS 16431:2003
01-julij-2003
Fluidna tehnika - Hidravlika - Montažni sistemi - Potrjevanje snažnosti
Hydraulic fluid power -- Assembled systems -- Verification of cleanliness
Transmissions hydrauliques -- Systèmes assemblés -- Vérification de la propreté
Ta slovenski standard je istoveten z: ISO/TS 16431:2002
ICS:
23.100.60 )LOWULWHVQLODLQ Filters, seals and
RQHVQDåHYDQMHWHNRþLQ contamination of fluids
SIST ISO/TS 16431:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST ISO/TS 16431:2003

---------------------- Page: 2 ----------------------

SIST ISO/TS 16431:2003

TECHNICAL ISO/TS
SPECIFICATION 16431
First edition
2002-06-01

Hydraulic fluid power — Assembled
systems — Verification of cleanliness
Transmissions hydrauliques — Systèmes assemblés — Vérification de
la propreté




Reference number
ISO/TS 16431:2002(E)
©
ISO 2002

---------------------- Page: 3 ----------------------

SIST ISO/TS 16431:2003
ISO/TS 16431:2002(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not
be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this
file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this
area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event
that a problem relating to it is found, please inform the Central Secretariat at the address given below.


©  ISO 2002
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body
in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.ch
Printed in Switzerland

ii © ISO 2002 – All rights reserved

---------------------- Page: 4 ----------------------

SIST ISO/TS 16431:2003
ISO/TS 16431:2002(E)
Contents Page
Foreword.iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Test equipment.2
5 Sampling.2
6 Test procedure.2
7 Criteria for acceptance.4
8 Test report.4
9 Identification statement (reference to this Technical Specification).4
Annex A (informative) Form for reporting the verification of the cleanliness level of an assembled
hydraulic system .6
Annex B (informative) Example of a completed form for reporting the verification of the cleanliness
level of an assembled hydraulic system.7
Bibliography.8

© ISO 2002 – All rights reserved iii

---------------------- Page: 5 ----------------------

SIST ISO/TS 16431:2003
ISO/TS 16431:2002(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a technical
committee may decide to publish other types of normative document:
— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an
ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the
parent committee casting a vote;
— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a
vote.
An ISO/PAS or ISO/TS is reviewed after three years with a view to deciding whether it should be confirmed for a
further three years, revised to become an International Standard, or withdrawn. In the case of a confirmed ISO/PAS
or ISO/TS, it is reviewed again after six years at which time it has to be either transposed into an International
Standard or withdrawn.
Attention is drawn to the possibility that some of the elements of this Technical Specification may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TS 16431 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 6,
Contamination control.
Annexes A and B of this Technical Specification are for information only.
iv © ISO 2002 – All rights reserved

---------------------- Page: 6 ----------------------

SIST ISO/TS 16431:2003
ISO/TS 16431:2002(E)
Introduction
In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an
enclosed circuit.
The initial cleanliness level of a hydraulic system can affect its performance and useful life. Unless removed,
contaminants present after manufacture and assembly of a system may circulate through the system, causing
damage. To limit such damage, the fluid and internal surfaces of the hydraulic fluid power system must be cleaned
to an acceptable level.
While this Technical Specification describes a clean-up procedure that uses filters after final assembly of the
system, this practice is not a substitute for the use of good practices to achieve and maintain cleanliness prior to
final assembly.
© ISO 2002 – All rights reserved v

---------------------- Page: 7 ----------------------

SIST ISO/TS 16431:2003

---------------------- Page: 8 ----------------------

SIST ISO/TS 16431:2003
TECHNICAL SPECIFICATION ISO/TS 16431:2002(E)

Hydraulic fluid power — Assembled systems — Verification of
cleanliness
1 Scope
This Technical Specification defines a procedure for measuring and verifying a desired cleanliness level in an
assembled hydraulic fluid power system upon its release from the production area.
NOTE It is recommended that components and parts used in such systems be clean prior to assembly; see ISO 18413 for
guidance.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this Technical Specification. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this Technical Specification are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 3722, Hydraulic fluid power — Fluid sample containers — Qualifying and controlling cleaning methods
ISO 4021, Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of
an operating system
1)
ISO 4407 , Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the
counting method using an optical microscope
ISO 5598, Fluid power systems and components — Vocabulary
ISO 11500, Hydraulic fluid power — Determination of particulate contamination by automatic counting using the
light extinction principle
3 Terms and definitions
For the purposes of this Technical Specification, the definitions given in ISO 5598 and the follow
...

SPÉCIFICATION ISO/TS
TECHNIQUE 16431
Première édition
2002-06-01


Transmissions hydrauliques — Systèmes
assemblés — Vérification de la propreté
Hydraulic fluid power — Assembled systems — Verification of cleanliness




Numéro de référence
ISO/TS 16431:2002(F)
©
ISO 2002

---------------------- Page: 1 ----------------------
ISO/TS 16431:2002(F)
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©  ISO 2002
Droits de reproduction réservés. Sauf prescription différente, 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 et les microfilms, sans l'accord écrit de l’ISO à
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ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax. + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.ch
Imprimé en Suisse

ii © ISO 2002 – Tous droits réservés

---------------------- Page: 2 ----------------------
ISO/TS 16431:2002(F)
Sommaire Page
Avant-propos .iv
Introduction.v
1 Domaine d'application .1
2 Références normatives .1
3 Termes et définitions.1
4 Appareillage .2
5 Échantillonnage .2
6 Mode opératoire.3
7 Critères d'acceptation .4
8 Rapport d'essai.4
9 Phrase d'identification (Référence à la présente Spécification technique).4
Annex A (informative) Formulaire de rapport de vérification du niveau de propreté d'un système
hydraulique assemblé.6
Annex B (informative) Exemple de formulaire complété d'un rapport de vérification du niveau de
propreté d'un système hydraulique assemblé .7
Bibliographie.8

© ISO 2002 – Tous droits réservés iii

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ISO/TS 16431:2002(F)
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 (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI,
Partie 3.
La tâche principale des comités techniques est d'élaborer les Normes internationales. Les projets de Normes
internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur publication
comme Normes internationales requiert l'approbation de 75 % au moins des comités membres votants.
Dans d'autres circonstances, en particulier lorsqu'il existe une demande urgente du marché, un comité technique
peut décider de publier d'autres types de documents normatifs:
— une Spécification publiquement disponible ISO (ISO/PAS) représente un accord entre les experts dans un
groupe de travail ISO et est acceptée pour publication si elle est approuvée par plus de 50 % des membres
votants du comité dont relève le groupe de travail;
— une Spécification technique ISO (ISO/TS) représente un accord entre les membres d'un comité technique et
est acceptée pour publication si elle est approuvée par 2/3 des membres votants du comité.
Une ISO/PAS ou ISO/TS fait l'objet d'un examen après trois ans afin de décider si elle est confirmée pour trois
nouvelles années, révisée pour devenir une Norme internationale, ou annulée. Lorsqu'une ISO/PAS ou ISO/TS a
été confirmée, elle fait l'objet d'un nouvel examen après six ans pour décider soit de sa transposition en Norme
internationale soit de son annulation.
L'attention est appelée sur le fait que certains des éléments de la présente Spécification technique 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.
L'ISO/TS 16431 a été élaborée par le comité technique ISO/TC 131, Transmissions hydrauliques et pneumatiques,
sous-comité SC 6, Contrôle de la contamination.
Les annexes A et B de la présente Spécification technique sont données uniquement à titre d'information.
iv © ISO 2002 – Tous droits réservés

---------------------- Page: 4 ----------------------
ISO/TS 16431:2002(F)
Introduction
Dans les systèmes de transmissions hydrauliques, l'énergie est transmise et commandée par l'intermédiaire d'un
liquide sous pression circulant en circuit fermé.
Le niveau de propreté initiale d'un système hydraulique peut avoir une incidence sur sa performance et sa durée
de vie. S'ils ne sont pas éliminés, les polluants présents après la fabrication et le montage d'un système sont
susceptibles de circuler dans le système et de l'endommager. Pour y remédier, le fluide et les surfaces intérieures
du système de transmissions hydrauliques doivent être nettoyés à un niveau admissible.
La présente Spécification technique décrit un mode opératoire de nettoyage faisant appel à des filtres après le
montage final du système; cependant, cette pratique ne se substitue pas aux bonnes pratiques permettant
d'obtenir et de conserver la propreté avant l'assemblage final.
© ISO 2002 – Tous droits réservés v

---------------------- Page: 5 ----------------------
SPÉCIFICATION TECHNIQUE ISO/TS 16431:2002(F)

Transmissions hydrauliques — Systèmes assemblés —
Vérification de la propreté
1 Domaine d'application
La présente Spécification technique décrit un mode opératoire de mesurage et de vérification du niveau de
propreté souhaité dans un système de transmissions hydrauliques assemblé à sa sortie de fabrication.
NOTE Il est recommandé que les composants et pièces utilisés dans ces systèmes soient propres avant le montage; pour
des directives, se référer à l'ISO 18413.
2 Références normatives
Les documents normatifs suivants contiennent des dispositions qui, par suite de la référence qui y est faite,
constituent des dispositions valables pour la présente Spécification technique. Pour les références datées, les
amendements ultérieurs ou les révisions de ces publications ne s'appliquent pas. Toutefois, les parties prenantes
aux accords fondés sur la présente Spécification technique sont invitées à rechercher la possibilité d'appliquer les
éditions les plus récentes des documents normatifs indiqués ci-après. Pour les références non datées, la dernière
édition du document normatif en référence s'applique. Les membres de l'ISO et de la CEI possèdent le registre des
Normes internationales en vigueur.
ISO 3722, Transmissions hydrauliques — Flacons de prélèvement — Homologation et contrôle des méthodes de
nettoyage
ISO 4021, Transmissions hydrauliques — Analyse de la pollution par particules — Prélèvement des échantillons
de fluide dans les circuits en fonctionnement
1)
ISO 4407 , Transmissions hydrauliques — Pollution des fluides — Détermination de la pollution particulaire par
comptage au microscope optique
ISO 5598, Transmissions hydrauliques et pneumatiques — Vocabulaire
ISO 11500, Transmissions hydrauliques — Détermination de la pollution particulaire par comptage automatique à
absorption de lumière
3 Termes et définitions
Pour les besoins de la présente Spécification technique, les termes et définitions donnés dans l'ISO 5598 ainsi que
les suivants s'appliquent.
3.1
filtre de dépollution
filtre à haute efficacité, permettant d'obtenir la propreté requise

1) À publier. (Révision de l’ISO 4407:1991)
© ISO 2002 – Tous droits réservés 1

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ISO/TS 16431:2002(F)
3.2
filtre en dérivation
filtre ou autre dispositif de filtration monté à l'extérieur et relié au système de transmissions hydrauli
...