prEN ISO 21049

SLOVENSKI STANDARD
01-maj-2010
ýUSDONH6LVWHPLJUHGQLKWHVQLON]DFHQWULIXJDOQHLQURWDFLMVNHþUSDONH,62',6

Pumps - Shaft-sealing systems for centrifugal and rotary pumps (ISO/DIS 21049:2010)
Pumpen - Wellendichtungssysteme für Kreiselpumpen und rotierende
Verdrängerpumpen (ISO/DIS 21049:2010)
Pompes - Dispositifs d'étanchéité de l'arbre pour pompes centrifuges et rotatives
(ISO/DIS 21049:2010)
Ta slovenski standard je istoveten z: prEN ISO 21049
ICS:
21.140 Tesnilke, mašilke Seals, glands
23.080 ýUSDONH Pumps
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2010
ICS 83.140.50; 23.080; 23.100.60 Will supersede EN ISO 21049:2004
English Version
Pumps - Shaft-sealing systems for centrifugal and rotary pumps
(ISO/DIS 21049:2010)
Pompes - Dispositifs d'étanchéité de l'arbre pour pompes Pumpen - Wellendichtungssysteme für Kreiselpumpen und
centrifuges et rotatives (ISO/DIS 21049:2010) rotierende Verdrängerpumpen (ISO/DIS 21049:2010)
This draft European Standard is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 12.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the
same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 21049:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (prEN ISO 21049:2010) has been prepared by Technical Committee ISO/TC 115 "Pumps" in
collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for
petroleum, petrochemical and natural gas industries” the secretariat of which is held by AFNOR.
This document is currently submitted to the parallel Enquiry.
This document will supersede EN ISO 21049:2004.
Endorsement notice
The text of ISO/DIS 21049:2010 has been approved by CEN as a prEN ISO 21049:2010 without any
modification.
DRAFT INTERNATIONAL STANDARD ISO/DIS 21049
ISO/TC 115/SC 3 Secretariat: ANSI
Voting begins on: Voting terminates on:
2010-03-25 2010-08-25
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Pumps — Shaft-sealing systems for centrifugal and rotary
pumps
Pompes — Dispositifs d'étanchéité de l'arbre pour pompes centrifuges et rotatives
[Revision of first edition (ISO 21049:2004)]
ICS 23.080; 23.100.60; 83.140.50

ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for Standardization (ISO), and
processed under the ISO-lead mode of collaboration as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
five-month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments received, will be
submitted to a parallel two-month approval vote in ISO and formal vote in CEN.
To expedite distribution, this document is circulated as received from the committee secretariat.
ISO Central Secretariat work of editing and text composition will be undertaken at publication
stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
©
International Organization for Standardization, 2010

ISO/DIS 21049
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ii ISO 2010 – All rights reserved

ISO/DIS 21049
Contents Page
Foreword . vi
Introduction . vii
1 Scope . 8
2 Normative References . 8
3 Terms and Definitions . 10
4 Sealing systems . 22
4.1 Seal categories, types and arrangements . 22
4.2 Objectives . 24
4.3 Specifying and/or purchasing a sealing system . 24
5 General . 32
5.1 Unit responsibility . 32
5.2 Dimensions. 32
6 Design requirements . 32
6.1 Common design requirements (all categories) . 32
6.2 Design requirements (category-specific) . 59
7 Specific seal configurations . 62
7.1 Arrangement 1 seals . 62
7.2 Arrangement 2 seals . 63
7.3 Arrangement 3 seals . 66
8 Accessories . 69
8.1 General . 69
8.2 Piping for seal auxiliary systems . 71
8.3 Components of Seal Auxiliary Systems (if specified per Annex G) . 75
9 Instrumentation . 90
9.1 General . 90
9.2 Temperature-indicating gauges . 90
9.3 Thermowells . 91
9.4 Pressure indicators. 91
9.5 Transmitters and Switches . 91
9.6 Level indicators . 92
9.7 Flow instruments . 92
9.8 Relief valves . 93
9.9 Pressure control valves . 93
9.10 Pressure amplifiers . 93
10 Inspection, testing and preparation for shipment . 94
10.1 General . 94
10.2 Inspection . 94
10.3 Testing . 95
10.4 Preparation for shipment . 100
11 Data transfer . 101
11.1 General . 101
11.2 Data Requirement Forms . 102
11.3 Data Sheet . 102
11.4 Inspector Checklist . 102
Annex A (informative) Re
...