EN 26948:1991
(Main)Automatic steam traps - Production and performance characteristic tests (ISO 6948:1981)
Automatic steam traps - Production and performance characteristic tests (ISO 6948:1981)
Specifies tests applicable to steam traps, these tests may be conducted to ensure the correct functioning of a trap or to evalute the performance of a particular design. Lays down the tests to be performed relative to each one of these two categories and describes briefly the corresponding test methods.
Kondensatableiter - Fertigungsprüfung und Prüfung der Funktionsmerkmale (ISO 6948:1981)
Purgeurs automatiques de vapeur d'eau - Essais de production et essais de caractéristiques de fonctionnement (ISO 6948:1981)
La présente Norme internationale spécifie un certain nombre d'essais applicables aux purgeurs automatiques de vapeur d'eau. Ces essais, dénommés par la suite essais de production et essais de caractéristiques de fonctionnement, peuvent être effectués afin de s'assurer du fonctionnement correct d'un purgeur ou pour évaluer les performances d'un modèle particulier. La présente Norme internationale spécifie les essais à effectuer pour chacune de ces deux catégories et décrit brièvement les méthodes d'essai correspondantes.
Avtomatični izločevalniki kondenzata - Tehnološko in funkcijsko preskušanje (ISO 6948:1981)
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 26948:2000
01-september-2000
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Automatic steam traps - Production and performance characteristic tests (ISO
6948:1981)
Kondensatableiter - Fertigungsprüfung und Prüfung der Funktionsmerkmale (ISO
6948:1981)
Purgeurs automatiques de vapeur d'eau - Essais de production et essais de
caractéristiques de fonctionnement (ISO 6948:1981)
Ta slovenski standard je istoveten z: EN 26948:1991
ICS:
23.060.01 Ventili na splošno Valves in general
SIST EN 26948:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 26948:2000
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SIST EN 26948:2000
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SIST EN 26948:2000
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SIST EN 26948:2000
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION@MEWV ’HAPOL1HAR OPrAHM3AWIR fl0 CTAH~PTM3A~MM.ORGANISATION INTERNATIONALE DE NORMALISATION
Automatic steam traps -
Production and Performance
characteristic tests
Purgeurs automatiques de vapeur d ’eau -
Essais de production et essais des caractbristiques de fonctionnement
First edition - 1981-11-01
UDC 621.186.6
Ref. No. ISO 69484981 (E)
Descriptors : industrial valves, traps, steam, tests, Performance tests, production control.
Price based on 3 pages
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SIST EN 26948:2000
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards institutes (ISO member bedies). The work of developing Inter-
national Standards is carried out through ISO technical committees. Every member
body interested in a subject for which a technical committee has been set up 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the ISO Council.
International Standard ISO 6948 was developed by Technical Committee ISO/TC 153,
Valves, and was circulated to the member bodies in November 1979.
lt has been approved by the member bodies of the following countries :
Romania
Austria Germany, F. R.
India South Africa, Rep. of
Belgium
Canada ltaly Sweden
Switzerland
Czechoslovakia Japan
Korea, Rep. of United Kingdom
Denmark
Finland Netherlands USA
USSR
France Norway
following countries expressed disapproval of the document
The member bodies of the
on technical grounds :
Australia
Poland
@ International Organization for Standardization, 1981 0
Printed in Switzerland
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SIST EN 26948:2000
ISO 6948-1981 (E)
INTERNATIONAL STANDARD
Production and Performance
Automatic steam traps -
characteristic tests
1 Scope and field of application 4.3 Operational check
This International Standard specifies tests applicable to Sample steam traps shall be tested to ensure that they open to
automatic steam traps. These tests, which are hereafter discharge condensate and close satisfactorily. Further details
referred to as production tests and Performance characteristic are given in 6.2. This test does not apply to the labyrinth (or
tests, may be conducted to ensure the correct functioning of a orifice) steam traps (sec ISO 6704).
steam trap or to evaluate the Performance of a particular
design. This International Standard specifies the tests to be
4.4 Notice for acceptance tests
performed relative to each one of these two categories and
describes briefly the corresponding test methods.
If the purchaser wishes to witness the tests, this shall be
specified in the Order.
2 References
The manufacturer shall give the purchaser at least five days
notice of the date when the tests will be performed.
ISO 6552, Automatic steam traps - Terminology.
ISO 6553, Automatic steam traps - Marking.
5 Performance characteristic tests
ISO 6704, Automatic steam traps - Classification. A manufacturer may describe the operations of a particular
type of steam trap by referring to one or more of the following
Performance characteristic tests.
3 Definitions
A brief explanation of the derivation of each characteristic is
given below; further details on the appropriate test methods are
3.1 production tests : Those tests carried out by the
specified in clause 6.
manufacturer to tonfirm that each automatic steam trap
functions correctly. These tests may be witnessed by the
purchaser or his representative; in this case, these tests are
5.1 Minimum operating pressure
referred to as acceptance tests.
The steam trap shall be tested
...
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