ISO 6786:1980
(Main)Road vehicles - Air braking systems - Identification of connections on units
Road vehicles - Air braking systems - Identification of connections on units
Specifies an identification system for pipe connections on units of air braking systems. The digits designated shall be placed close to the ports on the units. Applies to motor vehicles and their trailers and may also be used for schematic diagrams of braking systems. Shows an detailed example.
Véhicules routiers — Dispositifs de freinage à air comprimé — Repérage des orifices sur les appareils
La présente Norme internationale spécifie un système d'identification des orifices des dispositifs de freinage à air comprimé. Ce repérage devra être placé près des orifices sur les appareils. La présente Norme internationale est applicable aux dispositifs de freinage à air comprimé des véhicules à moteur et de leurs remorques, et peut aussi être utilisée sur les schémas des systèmes de freinage.
General Information
- Status
- Published
- Publication Date
- 31-May-1980
- Technical Committee
- ISO/TC 22/SC 33 - Vehicle dynamics and chassis components
- Drafting Committee
- ISO/TC 22/SC 33 - Vehicle dynamics and chassis components
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 27-Sep-2024
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 06-Jun-2022
Overview
ISO 6786:1980 defines an identification system for pipe connections on units of air braking systems used in motor vehicles and trailers. The standard requires numeric codes to be placed close to port openings on units and permits the same coding to be used on schematic diagrams of braking systems. It establishes one- and two‑digit designations to make port functions unambiguous for manufacture, assembly and maintenance.
Key Topics and Requirements
- Scope: Applies to motor vehicles and their trailers; also suitable for schematic diagrams of braking systems.
- Identification format:
- Primary code is a one-digit number (0–9) identifying the principal function of the port.
- A second digit may be added when several similar connections exist; second digits should start at 1 and continue sequentially (e.g., 21, 22, 23).
- If a single connection can perform multiple functions in one application, it is identified by two first digits separated by a dash (e.g., 1-2).
- Where one connection can serve different functions in different applications (e.g., multiway valves), identification should be agreed between manufacturer and customer.
- Sample first-digit meanings (as specified in the standard):
- 0 - Suction connection
- 1 - Energy inlet
- 2 - Energy supply (not to atmosphere)
- 3 - Exhaust / connection to atmosphere (venting)
- 4 - Pilot connection (entry into unit)
- 5, 6 - Spare designations
- 7 - Anti-freeze liquid connection (inlet/outlet sub-codes exist)
- 8 - Lubricating oil connection (e.g., for compressor)
- 9 - Cooling liquid connection (for compressor)
- Reserved two-digit codes: The standard defines specific two-digit usages (examples include 21 - energy supply to reservoir, 22 - switching connection; 71/72 for anti-freeze inlet/outlet; 81/82 for lubricating oil inlet/outlet; 91/92 for cooling liquid inlet/outlet).
- Placement: Digits must be placed close to the ports on the physical units for clear identification.
Applications and Users
ISO 6786 is practical for:
- Vehicle manufacturers and trailer builders (standardized port marking for production and quality control)
- Component suppliers and pneumatic valve manufacturers (consistent port coding across parts)
- Brake-system designers and integrators (clear interface definitions on units and schematics)
- Maintenance technicians and fleet service teams (rapid identification of ports for diagnostics and repair)
- Technical documentation authors and schematic diagram designers (unified labeling for troubleshooting and training)
Benefits include improved interoperability, reduced assembly errors, faster servicing, and clearer documentation for air braking systems.
Related Standards
- Developed by ISO Technical Committee ISO/TC 22 (Road vehicles).
- Best used alongside other ISO standards and vehicle braking system specifications to ensure complete compliance and compatibility.
Keywords: ISO 6786, air braking systems, identification of connections, pipe connections, braking-system ports, vehicle trailers, port coding, pneumatic braking.
ISO 6786:1980 - Road vehicles -- Air braking systems -- Identification of connections on units
ISO 6786:1980 - Véhicules routiers -- Dispositifs de freinage a air comprimé -- Repérage des orifices sur les appareils
ISO 6786:1980 - Véhicules routiers -- Dispositifs de freinage a air comprimé -- Repérage des orifices sur les appareils
Frequently Asked Questions
ISO 6786:1980 is a standard published by the International Organization for Standardization (ISO). Its full title is "Road vehicles - Air braking systems - Identification of connections on units". This standard covers: Specifies an identification system for pipe connections on units of air braking systems. The digits designated shall be placed close to the ports on the units. Applies to motor vehicles and their trailers and may also be used for schematic diagrams of braking systems. Shows an detailed example.
Specifies an identification system for pipe connections on units of air braking systems. The digits designated shall be placed close to the ports on the units. Applies to motor vehicles and their trailers and may also be used for schematic diagrams of braking systems. Shows an detailed example.
ISO 6786:1980 is classified under the following ICS (International Classification for Standards) categories: 43.040.40 - Braking systems. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 6786:1980 has the following relationships with other standards: It is inter standard links to ISO 12777-2:2000. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 6786:1980 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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 6786 was developed by Technical Committee ISO/TC 22,
Road vehicles, and was circulatd to the member bodies in July 1979.
lt has been approved by the member bodies of the following countries :
South Africa, Rep. of
Australia Italy
Austria Japan Spain
Belgium Korea, Dem. P. Rep. of Sweden
Korea, Rep. of Switzerland
Chile
China Netherlands United ‘Kingdom
New Zealand USA
Czechoslovakia
Poland USSR
France
Germany, F. R. Romania
No member body expressed disapproval of the document.
0 International Organkation for Standardkation, 1980
Printed in Switzerland
ISO 6786-1980 (E)
INTERNATIONAL STANDARD
Road vehicles - Air braking Systems - Identification of
connections on units
1 Scope 81 Lubricating oil inlet
82 Lubricating oil outlet
This International Standard specifies an identification System
91 Cooling liquid inlet
for pipe connections on units of air braking Systems. The digits
designated shall be placed close to the ports on the units.
92 Cooling liquid outlet
lf there are a number of similar connections belonging to one
2 Field sf application
unit and intended to fulfil the same function, they shall have the
same designation.
This International Standard applies to m
...
Norme internationale @ 6786
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION*MEXflYHAPOnHAR OPTAHMBAUMR nO CTAHfiAPTM3AUMM.ORGANlSATlON INTERNATIONALE DE NORMALISATION
Véhicules routiers - Dispositifs de freinage à air
- Repérage des orifices sur les appareils
comprimé
Road vehicles - Air braking systems - Identification of connections on units
Premiere edition - 1980-06-15
C D U 629.1 1-592.5
Réf. no : IS0 6786-1980 (FI
B
-
Descripteurs : véhicule routier, véhicule B moteur, circuit de freinage, frein 8 air comprimé, orifice, repérage alphanumérique.
Prix basé sur 1 page
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 confiée 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 IS0 6786 a été élaborée par le comité technique ISO/TC 22,
Vkhicules routiers, et a été soumise aux comités membres en juillet 1979.
:
Les comités membres des pays suivants l’ont approuvée
Afrique du Sud, Rép. d’ Corée, Rép. de Roumanie
Allemagne, R. F.
Espagne Royaume-Uni
Australie France Suede
Autriche
Italie Suisse
Belgique Japon Tchécoslovaquie
Chili Nouvelle-Zélande URSS
Chine Pays-Bas USA
Corée, Rép. dém. p. de Pologne
Aucun comité membre ne l’a désapprouvée.
0 Organisation internationale de normalisation, 1980 0
Imprime en Suisse
IS0 6786-1980 (FI
NORM E INTER NAT1 ON ALE
Véhicules routiers - Dispositifs de freinage à air
comprimé - Repérage des orifices sur les appareils
1 Objet 81 Entrée d’huile de lubrification
82 Sortie d‘huile de lubrification
La présente Norme internationale specifie un système d’identifi-
Entrée de liquide de refroidissement
cation des orifices des dispositifs de freinage à air comprimé. 91
Ce repérage devra être placé près des orifices sur
...
Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.ME~YHAPO~HAR OPTAHM3AL&lfi Il0 CTAHJJAPTbl3A~lM~RGANISATION INTERNATIONALE DE NORMALISATION
Disposit.ifs de freinage à air
Véhicules routiers -
Repérage des orifices sur les appareils
comprimé -
lden tifica tion of connections on units
Road vehicles - Air braking systems -
Première édition - 1980-06-15
-
Réf. no : 60 67864980 (FI
CDU 629.11-592.5
LA
Descripteurs : véhicule routier, véhicule à moteur, circuit de freinage, frein à air comprimé, orifice, repérage alphanumérique.
Prix basé sur 1 page
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 confiée 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 6786 a été élaborée par le comité technique ISO/TC 22,
Véhicules routiers, et a été soumise aux comités membres en juillet 1979.
Les comités membres des pays suivants l’ont approuvée :
Afrique du Sud, Rép. d’ Corée, Rép. de Roumanie
Allemagne, R. F. Espagne Royaume-Uni
Australie France
Suede
Autriche Italie Suisse
Belgique Japon Tchécoslovaquie
Chili Nouvelle-Zélande URSS
Chine Pays-Bas USA
Corée, Rép. dém. p. de
Pologne
Aucun comité membre ne l’a désapprouvée.
0 Organisation internationale de normalisation, 1980
Imprimé en Suisse
NORME INTERNATIONALE ISO 6786-1980 (FI
Véhicules routiers - Dispositifs de freinage à air
comprimé - Repérage des orifices sur les appareils
81 Entrée d’huile de lubrification
1 Objet
82 Sortie d’huile de lubrification
La présente Norme internationale spécifie un systéme d’identifi-
91 Entrée de liquide de refroidissement
cation des orifices des dispositifs de freinage à air comprimé.
Ce repérage devra être placé près des orifices sur les appareils.
92 Sortie de liquide de refroidissement
...
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