SIST ISO 6552:2000

Automatic steam traps -- Definition of technical terms

Gives the definitions of the major technical terms and expressions used to describe an steam trap as far as dimension, temperature, pressure, and flow rate are concerned, as well as their corresponding symbols and units.

Purgeurs automatiques de vapeur d'eau -- Définition des termes techniques

Avtomatični izločevalniki kondenzata - Definicija tehničnih pojmov

General Information

• Status: Published
• Publication Date: 31-Aug-2000
• ICS: 01.040.23 - Fluid systems and components for general use (Vocabularies)
• ICS: 23.060.01 - Valves in general
• Technical Committee: IHPV - Hydraulics and pneumatics
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2000
• Due Date: 01-Sep-2000
• Completion Date: 01-Sep-2000
• Ref Project: ISO 6552:1980 - Automatic steam traps - Definition of technical terms

Overview

SIST ISO 6552:2000, titled "Automatic Steam Traps - Definition of Technical Terms", is an International Standard published by the International Organization for Standardization (ISO). This standard provides clear and precise definitions for the major technical terms and expressions related to automatic steam traps, focusing on important parameters such as dimensions, temperature, pressure, and flow rate. It also specifies the corresponding symbols and units used to represent these terms.

By establishing a common vocabulary and standard units, SIST ISO 6552:2000 facilitates consistent communication and understanding among engineers, manufacturers, and users involved with automatic steam traps in various industrial applications.

Key Topics

The standard covers the following essential technical terms and concepts:

• Dimensions

  • Nominal Size (DN): A numerical size designation common to pipe system components. It is a reference size and not used for precise calculation.

• Pressure Terms

  • Nominal Pressure (PN): A reference number that defines mating dimensions and compatibility among components.
  • Maximum Allowable Pressure (PMA): The highest pressure the steam trap shell can safely endure permanently at a specified temperature.
  • Maximum Operating Pressure (PMO): The pressure rating defined by the manufacturer based on internal equipment limitations.
  • Operating Pressure (PO) and Operating Back Pressure (POB): Pressures measured at the inlet and outlet during operation.
  • Differential Pressure (ΔP): The pressure difference between inlet and outlet, critical for the trap’s correct function.
  • Test Pressure (PT) and Maximum Test Pressure (PTMX): Pressures applied during testing to ensure integrity.

• Temperature Terms

  • Basic Temperature (TB): Temperature considered when determining dimensions.
  • Maximum Allowable Temperature (TMA): Highest temperature the shell can sustain permanently.
  • Maximum Operating Temperature (TMO): Maximum temperature under which operation is guaranteed.
  • Operating Temperature (TO): Temperature at the steam trap inlet during operation.

• Flow Rate Terms

  • Cold Condensate Capacity (QC): Maximum condensate discharge at 20°C and a given differential pressure.
  • Hot Condensate Capacity (QH): Maximum condensate discharge at elevated temperature conditions.

Applications

SIST ISO 6552:2000 is highly valuable for professionals working with steam systems where automatic steam traps are installed to remove condensate and non-condensable gases without loss of live steam. Key applications include:

• Industrial Steam Systems: Chemical plants, refineries, food processing, and power generation, where precise understanding of steam trap performance parameters is critical.
• Design and Engineering: Helps engineers specify and select steam traps using standardized terms to ensure compatibility and safety.
• Quality Control and Testing: Provides a basis for evaluating maximum operating pressures, temperatures, and flow rates during manufacture and maintenance.
• Technical Documentation: Enables consistent reporting and comparison of steam trap characteristics across manufacturers and industries.

Related Standards

SIST ISO 6552:2000 should be used alongside other ISO standards and technical documents that regulate steam system components for a comprehensive understanding, including:

• ISO standards on steam valves and fittings
• ISO documents related to pressure and temperature rating tables for piping components
• Industry standards for steam trap testing and performance evaluation
• National and international codes addressing safety and pressure equipment

Conclusion

The SIST ISO 6552:2000 standard plays a crucial role in promoting harmonization in terminology and measurement related to automatic steam traps. By defining clear technical terms and their corresponding symbols and units, it supports improved design, operation, safety, and maintenance in steam applications. Compliance with this standard enables enhanced communication and technical clarity among manufacturers, users, and regulatory bodies in the steam technology sector.

Keywords: ISO 6552, automatic steam traps, steam trap definitions, steam trap dimensions, steam pressure terms, steam temperature, condensate flow rate, steam system standards

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2000
$YWRPDWLþQLL]ORþHYDOQLNLNRQGHQ]DWD'HILQLFLMDWHKQLþQLKSRMPRY
Automatic steam traps -- Definition of technical terms
Purgeurs automatiques de vapeur d'eau -- Définition des termes techniques
Ta slovenski standard je istoveten z: ISO 6552:1980
ICS:
01.040.23 7HNRþLQVNLVLVWHPLLQVHVWDYQL Fluid systems and
GHOL]DVSORãQRUDER6ORYDUML components for general use
(Vocabularies)
23.060.01 Ventili na splošno Valves in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

International Standard
c
INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWißEIK,IJYHAPO~HAfl OPI-AHW3AUMR fl0 CTAHAAPTM3ALWlKIRGANISATION INTERNATIONALE DE NORMALISATION
Definition of technical terms
Automatic steam traps -
DMnition des termes techniques
Purgeurs automatiques de vapeur d’eau -
First edition - 1960-06-01
UDC 621.186.6 : 001.4 Ref. No. ISO 6552-1960 (EI
dimensions, temperature, flow rate, Symbols, definitions.
Descriptors : industrial valves, traps, steam,
Price based on 3 pages
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards institutes (ISO member bodies). 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.
lt has been approved by the member bodies of the following countries :
Germany, F. R. Poland
Australia
Austria India Romania
Belgium I taly Sweden
Canada Japan Switzerland
Chile Korea, Rep. of United Kingdom
Libyan Arab Jamahiriya
Denmark USA
Finland Netherlands USSR ’
France Norway
The member bodies of the following countries expressed disapproval of the document
on technical grounds :
Czechoslovakia
South Africa, Rep. of
0 International Organkation for Standardkation, 1980
Printed in Switzerland
INTERNATIONAL STANDARD 60 6552-1980 (E)
Automatic steam traps - Definition sf technical terms
1 Scope and field of application
0 lntroduction
This International Standard gives the definitions of the major
The purpose of this International Standard is to establish
precise definitions for technical terms and expressions which technical terms and expressions used to describe an automatic
steam trap as far as dimension, pressure, temperature and flow
are commonly used to describe with a certain accuracy an
rate are concerned, as well as their corresponding Symbols and
automatic steam trap under operating conditions.
units.
This International Standard has to be considered in conjunction
2 Definition of technical terms
with every other International Standard using these terms and
expressions to describe the techni
...

International Standard
c
INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWißEIK,IJYHAPO~HAfl OPI-AHW3AUMR fl0 CTAHAAPTM3ALWlKIRGANISATION INTERNATIONALE DE NORMALISATION
Definition of technical terms
Automatic steam traps -
DMnition des termes techniques
Purgeurs automatiques de vapeur d’eau -
First edition - 1960-06-01
UDC 621.186.6 : 001.4 Ref. No. ISO 6552-1960 (EI
dimensions, temperature, flow rate, Symbols, definitions.
Descriptors : industrial valves, traps, steam,
Price based on 3 pages
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards institutes (ISO member bodies). 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.
lt has been approved by the member bodies of the following countries :
Germany, F. R. Poland
Australia
Austria India Romania
Belgium I taly Sweden
Canada Japan Switzerland
Chile Korea, Rep. of United Kingdom
Libyan Arab Jamahiriya
Denmark USA
Finland Netherlands USSR ’
France Norway
The member bodies of the following countries expressed disapproval of the document
on technical grounds :
Czechoslovakia
South Africa, Rep. of
0 International Organkation for Standardkation, 1980
Printed in Switzerland
INTERNATIONAL STANDARD 60 6552-1980 (E)
Automatic steam traps - Definition sf technical terms
1 Scope and field of application
0 lntroduction
This International Standard gives the definitions of the major
The purpose of this International Standard is to establish
precise definitions for technical terms and expressions which technical terms and expressions used to describe an automatic
steam trap as far as dimension, pressure, temperature and flow
are commonly used to describe with a certain accuracy an
rate are concerned, as well as their corresponding Symbols and
automatic steam trap under operating conditions.
units.
This International Standard has to be considered in conjunction
2 Definition of technical terms
with every other International Standard using these terms and
expressions to describe the technical characteristics or perfor-
2.1 Dimension
mances of an automatic steam trap.
Symbol Unit Definition
Term
I
Nominal site Numerital designation of size which is common to all com-
ponents in a piping System other than components designated
by outside diameters. lt is a convenient round number for ref-
erence purposes and is only loosely related to manufacturing
dimensions.
In any case, the nominal size DN cannot be subject to measure-
ment and shall not be used for purposes of calculation.

-----------------
...

Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWlE~YHAPO~HAR OPTAHM3AL&Vl fl0 CTAH~APTH3AL&lWORGANISATION INTERNATIONALE DE NORMALISATION
Purgeurs automatiques de vapeur d’eau - Définition des
termes techniques
Automatic steam traps - Definition of technical terms
Premiere bdition - 1980-06-01
CDU 621.166.6 : 001.4
Réf. no : ISO 6552-1960 (F)
û
Y
Descripteurs : robinetterie industrielle, purgeur, vapeur d’eau sous-pression,
dimension, température, débit, symbole, définition.
p
Prix basé sur 3 pages
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiee aux comités techniques de I’ISO. Chaque
comité membre intéressé par une étude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La Norme internationale ISO 6552 a été élaborée par le comité technique ISO/TC 153,
Robinetterie industrielle pour les usages courants, et a été soumise aux comités mem-
bres en mars 1979.
Les comités membres des pays suivants l’ont approuvée :
Allemagne, F. R. Finlande Pologne
Australie
France Roumanie
Au triche Inde Royaume-Uni
Belgique Italie Suède
Canada Jamahiriya arabe libyenne Suisse
Chili Japon URSS
Corée, Rép. de Norvége USA
Danemark Pays-Bas
Les comités membres des pays suivants l’ont désapprouvée. pour des raisons techni-
ques :
Afrique du Sud, Rép. d’
Tchécoslovaquie
0 Organisation internationale de normalisation, 1980
Imprimé en Suisse
NORME INTERNATIONALE ISO 65524980 (FI
.y
Purgeurs automatiques de vapeur d’eau - D’éfinition des
termes techniques
0 Introduction 1 Objet et domaine d’application
Le but de la présente Norme internationale est d’établir des La présente Norme internationale donne les définitions des
définitions précises pour les termes et expressions techniques principaux termes et expressions techniques employés pour
décrire un purgeur automatique de vapeur d’eau en matiére de
qui sont communément employés pour décrire avec une cer-
taine précision un purgeur automatique de vapeur d’eau en dimension, pression, température et débit, ainsi que leurs
symboles et unités correspondants.
fonctionnement.
La présente Norme internationale doit être utilisée conjointe-
2 Définition des termes techniques
ment a toute autre Norme internationale utilisant ces termes et
expressions pour décrire les caractéristiques techniques ou les
performances d’un purgeur automatique de vapeur d’eau. 2.1 Dimensions
Définition
Terme Symbole Unité
I
-
Diamètre DN Désignation dimensionnelle numérique commune à tous les élé-
ments de tuyauterie autres que ceux désignés par leur diamétre
nominal
extérieur. C’est un chiffre rond utilisé aux fins de référence et
qui n’est relié que de maniére approximative aux
...

Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWlE~YHAPO~HAR OPTAHM3AL&Vl fl0 CTAH~APTH3AL&lWORGANISATION INTERNATIONALE DE NORMALISATION
Purgeurs automatiques de vapeur d’eau - Définition des
termes techniques
Automatic steam traps - Definition of technical terms
Premiere bdition - 1980-06-01
CDU 621.166.6 : 001.4
Réf. no : ISO 6552-1960 (F)
û
Y
Descripteurs : robinetterie industrielle, purgeur, vapeur d’eau sous-pression,
dimension, température, débit, symbole, définition.
p
Prix basé sur 3 pages
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiee aux comités techniques de I’ISO. Chaque
comité membre intéressé par une étude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La Norme internationale ISO 6552 a été élaborée par le comité technique ISO/TC 153,
Robinetterie industrielle pour les usages courants, et a été soumise aux comités mem-
bres en mars 1979.
Les comités membres des pays suivants l’ont approuvée :
Allemagne, F. R. Finlande Pologne
Australie
France Roumanie
Au triche Inde Royaume-Uni
Belgique Italie Suède
Canada Jamahiriya arabe libyenne Suisse
Chili Japon URSS
Corée, Rép. de Norvége USA
Danemark Pays-Bas
Les comités membres des pays suivants l’ont désapprouvée. pour des raisons techni-
ques :
Afrique du Sud, Rép. d’
Tchécoslovaquie
0 Organisation internationale de normalisation, 1980
Imprimé en Suisse
NORME INTERNATIONALE ISO 65524980 (FI
.y
Purgeurs automatiques de vapeur d’eau - D’éfinition des
termes techniques
0 Introduction 1 Objet et domaine d’application
Le but de la présente Norme internationale est d’établir des La présente Norme internationale donne les définitions des
définitions précises pour les termes et expressions techniques principaux termes et expressions techniques employés pour
décrire un purgeur automatique de vapeur d’eau en matiére de
qui sont communément employés pour décrire avec une cer-
taine précision un purgeur automatique de vapeur d’eau en dimension, pression, température et débit, ainsi que leurs
symboles et unités correspondants.
fonctionnement.
La présente Norme internationale doit être utilisée conjointe-
2 Définition des termes techniques
ment a toute autre Norme internationale utilisant ces termes et
expressions pour décrire les caractéristiques techniques ou les
performances d’un purgeur automatique de vapeur d’eau. 2.1 Dimensions
Définition
Terme Symbole Unité
I
-
Diamètre DN Désignation dimensionnelle numérique commune à tous les élé-
ments de tuyauterie autres que ceux désignés par leur diamétre
nominal
extérieur. C’est un chiffre rond utilisé aux fins de référence et
qui n’est relié que de maniére approximative aux
...