EN ISO 21049:2004

Pumps - Shaft sealing systems for centrifugal and rotary pumps (ISO 21049:2004)

ISO 21049:2004 specifies requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas and chemical industries. It is applicable mainly for hazardous, flammable and/or toxic services where a greater degree of reliability is required for the improvement of equipment availability and the reduction of both emissions to the atmosphere and life-cycle sealing costs. It covers seals for pump shaft diameters from 20 mm (0,75 in) to 110 mm (4,3 in).
ISO 21049:2004 is also applicable to seal spare parts and can be referred to for the upgrading of existing equipment. A classification system for the seal configurations covered by ISO 21049:2004 into categories, types, arrangements and orientations is provided.

Pumpen - Wellendichtungssysteme für Kreiselpumpen und rotierende Verdrängerpumpen (ISO 21049:2004)

Pompes - Dispositifs d'étanchéité de l'arbre pour pompes centrifuges et rotatives (ISO 21049:2004)

L'ISO 21049:2003 spécifie des exigences et fournit des recommandations applicables aux dispositifs d'étanchéité pour des pompes centrifuges et rotatives utilisées dans les industries du pétrole, du gaz naturel et de la chimie. Elle est applicable principalement aux services dangereux, inflammables et/ou toxiques pour lesquels un degré de fiabilité plus important est requis afin de permettre d'améliorer la disponibilité des équipements et de réduire les émissions dans l'atmosphère ainsi que le coût du cycle de vie des dispositifs d'étanchéité. Elle couvre des dispositifs d'étanchéité pour des diamètres d'arbre compris entre 20 mm (0,75 in) et 110 mm (4,3 in).
L'ISO 21049:2003 est applicable également aux pièces de rechange des dispositifs d'étanchéité et peut être citée en tant que référence normative dans le cadre de rénovations d'équipements existants. Un système de classification est fourni, permettant de classer en catégories, types et dispositions les configurations des garnitures couvertes par l'ISO 21049:2003.

Črpalke - Sistemi grednih tesnilk za centrifugalne in rotacijske črpalke (ISO 21049:2004)

General Information

• Status: Published
• Publication Date: 21-Dec-2004
• Withdrawal Date: 29-Jun-2005
• ICS: 21.140 - Seals, glands
• ICS: 23.080 - Pumps
• Technical Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Drafting Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Current Stage: 9092 - Decision on results of review/2YR ENQ - revise - Review Enquiry
• Start Date: 14-May-2007
• Completion Date: 14-May-2007
• Ref Project: SIST EN ISO 21049:2005 - Pumps - Shaft sealing systems for centrifugal and rotary pumps (ISO 21049:2004)

Relations

• Revised: prEN ISO 21049 - Pumps - Shaft-sealing systems for centrifugal and rotary pumps (ISO/DIS 21049:2010)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 21049:2005
01-april-2005
ýUSDONH6LVWHPLJUHGQLKWHVQLON]DFHQWULIXJDOQHLQURWDFLMVNHþUSDONH,62

Pumps - Shaft sealing systems for centrifugal and rotary pumps (ISO 21049:2004)
Pumpen - Wellendichtungssysteme für Kreiselpumpen und rotierende
Verdrängerpumpen (ISO 21049:2004)
Pompes - Dispositifs d'étanchéité de l'arbre pour pompes centrifuges et rotatives (ISO
21049:2004)
Ta slovenski standard je istoveten z: EN ISO 21049:2004
ICS:
21.140 Tesnilke, mašilke Seals, glands
23.080 ýUSDONH Pumps
SIST EN ISO 21049:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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

SIST EN ISO 21049:2005

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

SIST EN ISO 21049:2005
EUROPEAN STANDARD
EN ISO 21049
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2004
ICS 23.100.60; 23.080; 83.140.50
English version
Pumps - Shaft sealing systems for centrifugal and rotary pumps
(ISO 21049:2004)
Pompes - Dispositifs d'étanchéité de l'arbre pour pompes Pumpen - Wellendichtungssysteme für Kreiselpumpen und
centrifuges et rotatives (ISO 21049:2004) rotierende Verdrängerpumpen (ISO 21049:2004)
This European Standard was approved by CEN on 21 December 2004.
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. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21049:2004: E
worldwide for CEN national Members.

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

SIST EN ISO 21049:2005
EN ISO 21049:2004 (E)






Foreword



The text of ISO 21049:2004 has been prepared by Technical Committee ISO/TC 115 "Pumps" of
the International Organization for Standardization (ISO) and has been taken over as EN ISO
21049:2004 by Technical Committee CEN/TC 12 "Materials, equipment and offshore structures
for petroleum and natural gas industries" the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by June 2005, and conflicting national
standards shall be withdrawn at the latest by June 2005.

NOTE Attention is drawn to the fact that Clause 10.2.3 permits the use of alternative standards
(e.g. EN 13445-5) for the non-destructive examination of materials

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice

The text of ISO 21049:2004 has been approved by CEN as EN ISO 21049:2004 without any
modifications.

2

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

SIST EN ISO 21049:2005
ISO 21049:2004(E)
RECOMMENDED SEAL SELECTION PROCEDURE (US CUSTOMARY UNITS)
SHEET 1 OF 10


© ISO 2004 – All rights reserved 103

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

SIST EN ISO 21049:2005
ISO 21049:2004(E)
RECOMMENDED SEAL SELECTION PROCEDURE (US CUSTOMARY UNITS)
SEAL CATEGORY, TYPE, AND ARRANGEMENT SUMMARY
SHEET 2 OF 10
Seal category shall be Category 1, 2 or 3 as specified.
The major features of each category are summarized below. Options, where they exist for each feature, are
listed in the text as “if specified”. Clause numbers in parentheses indicate where the requirements are
specified.
FEATURE CATEGORY 1 CATEGORY 2 CATEGORY 3
Seal chamber size. ISO 3069 Type C, ISO 13709. ISO 13709.
(4.1.2) ASME B73.1 and
ASME B73.2.
Temperature range. – 40 °F to 500 °F – 40 °F to 750 °F – 40 °F to 750 °
...