6786 International Standard (TSO INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEXAYHAPOAHAR OPrAHW3ALMR HO CTAHAAPTW3ALWM+ORGANISATION INTERNATIONALE DE NORMALISATION Road vehicles - Air braking systems -- Identification of connections on units Vehicules routiers - Dispositifs de freinage a air comprimé - Reperage des orifices sur les appareils First edition -- 1980-06-15 UDC 629.11-592.5 Ref. No. ISO 6786-1980 (E) SO 6786-1980 (E) Descriptors : road vehicles, motor vehicles, braking systems, air brakes, orifices, alphanumeric marking. Price based on 1 page Copyright International Organization for Standardization Not for Resale Foreword ISO (the International Organization for Standardization) is a worldwide federation of 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. It has been approved by the member bodies of the following countries : Australia Italy South Africa, Rep. of Austria Spain Japan Belgium Korea, Dem. P. Rep. of Sweden Chile Korea, Rep. of Switzerland China United Kingdom Netherlands USA Czechoslovakia New Zealand France Poland USSR Germany, F. R. Romania No member body expressed disapproval of the document. @ International Organization for Standardization, 1980 Printed in Switzerland d without license from IHS Not for Resale ISO 6786-1980 (E) INTERNATIONAL STANDARD Road vehicles - Air braking systems - ldentification 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 If there are a number of similar connections belonging to one 2 Field of application unit and intended to fulfil the same function, they shall have the same designation. This International Standard applies to motor vehicles and their trailers and may also be used for schematic diagrams of braking A connection which can fuifil, in any one application, more systems. than one function shail be identified by two (first) digits. These shall be separated by a dash (see example in clause 4). 3 Identification A connection which can fulfil more than one function in diffe- rent applications shall be identified in accordance with agree- 3.1 The identification code consists of a one or two digit ment between the manufacturer and customer (for example number as follows. multiway valves). 3.1.1 First digit : 4 Example 0 Suction connection Unit with filling and switching connections 1 Energy inlet 2 Energy supply (not to atmosphere, see digit 3) [1-2 3Exhaust 4 Pilot connection (entry into unit) 21 5 Spare Unloader 1 6 Spare valve 22 7 Anti-freeze liquid connection 8 Lubricating oil connection (for compressor) 9 Cooling liquid connection (for compressor) 3.1.2 Second digit : In this example the references signify A second digit may be added, when several similar connections 1 Energy inlet from the compressor are available, for example with split systems. The function represented by this second digit is left to the discretion of the 1-2 Energy inlet using a valve for fling the air braking system, vehicle manufacturer, but should start at 1 and continue unin- terrupted, for example 21, 22, 23, etc. Exceptions are permitted and energy supply by use of a valve as used for blowing up tyres when applyi