1、BRITISH STANDARD BS ISO 6743-3:2003 Lubricants, industrial oils and related products (class L) Classification Part 3: Family D (Compressors) ICS 75.100 BS ISO 6743-3:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 9 December 2004 BSI 9 D
2、ecember 2004 ISBN 0 580 45012 0 National foreword This British Standard reproduces verbatim ISO 6743-3:2003 and implements it as the UK national standard. It supersedes BS 6413-3.1:1988 and BS 6413-3.2:1989 which are withdrawn. The UK participation in its preparation was entrusted to Technical Commi
3、ttee PTI/7, Lubricants and process fluids, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found i
4、n the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsi
5、ble for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the
6、UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 8, an inside back cover and a back cover. The BSI copyright noti
7、ce displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 6743-3:2003(E)INTERNATIONAL ADNATSDR ISO 6-3473 tide tsriFino 3002-51-01 Lubricants, industrial oils and related products (class L) Classificatio
8、n Part 3: Family D (Compressors) Lubrifiants, huiles industrielles et produits connexes (classe L) Classification Partie 3: Famille D (Compresseurs) Referecne unbmer OSI 3-3476002:)E(3INTERNATIONAL STANDARD ISO 6743-3 First edition 2003-10-15 cirbuLnani ,stdulairts a sliodn detaler dorpstcu salc(s )
9、L issalCtacif noi :3 traP limaFy D (oCmpr)srosse rbuLfiaistn, uhlise nisudrtilelse te rpudosti cnoxense (clsas)L e Claissfiaction raPti:3 e FmaillD e (Cmorpsesrues) BSISO67433:2003 ii BSISO67433:2003 iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of na
10、tional standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Intern
11、ational organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the
12、rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by
13、at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6743-3 was prepared by Technical Committee ISO
14、/TC 28, Petroleum products and lubricants, Subcommittee SC 4, Classifications and specifications. This first edition combines, cancels and replaces the first editions of ISO 6743-3A:1987 and ISO 6743-3B:1988, which have been technically revised. ISO 6743 consists of the following parts, under the ge
15、neral title Lubricants, industrial oils and related products (class L) Classification: Part 1: Family A (Total loss systems) Part 2: Family F (Spindle bearings, bearings and associated clutches) Part 3: Family D (Compressors) Part 4: Family H (Hydraulic systems) Part 5: Family T (Turbines) Part 6: F
16、amily C (Gears) Part 7: Family M (Metalworking) Part 8: Family R (Temporary protection against corrosion) Part 9: Family X (Greases) Part 10: Family Y (Miscellaneous) Part 11: Family P (Pneumatic tools) Part 12: Family Q (Heat transfer fluids) Part 13: Family G (Slideways) Part 14: Family U (Heat tr
17、eatment) BSISO67433:2003iv Part 15: Family E (Internal combustion engine oils) Part 99: General BSISO67433:2003INTENRATIONAL TSANDADR IS-3476 O3:(3002E)1Lubricants, industrial oils and related products (class L) Classification Part 3: Family D (Compressors) 1 Scope This part of ISO 6743 establishes
18、the detailed classification of lubricants for use in family D, air compressors, gas compressors and refrigeration compressors. The intention of this part of ISO 6743 is to provide a rationalized range of the most commonly used internationally available lubricants for air, gas and refrigeration compr
19、essors, without resorting to unnecessary restriction by specifications or products description. The primary intention of this classification is to describe and promote the use of the type of lubricant which is best suited for the particular application, specifically with stationary air compressors,
20、with the aim of reducing as far as possible the risks of fire and explosion. Relevant safety rules are given in ISO 5388. ISO 5388 as published in 1991 should be revised to reflect the change from light, medium and heavy duty cycles to normal and severe duty cycles as described in this edition of IS
21、O 6743-3. This part of ISO 6743 should be read in conjunction with ISO 6743-99 1) . 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of th
22、e referenced document (including any amendments) applies. ISO 3448:1992, Industrial liquid lubricants ISO viscosity classification ISO 5388, Stationary air compressors Safety rules and code of practice ISO 8681:1986, Petroleum products and lubricants Method of classification Definition of classes 1)
23、 ISO 6743-99:2002, Lubricants, industrial oils and related products (class L) Classification Part 99: General BSISO67433:20032 3 Explanation of systems used 3.1 The detailed classification of family D has been established by defining the categories of products required for the main applications of t
24、his family. 3.2 Each category is designated by a symbol consisting of a group of letters, which together constitute a code. NOTE The first letter of the code “D” identifies the family of the product considered but the second and third letters taken separately have no significance of their own. The d
25、esignation of each category may be supplemented by the addition of viscosity grades according to ISO 3448. 3.3 In this classification system, products are designated in a uniform manner in accordance with ISO 8681. For example, a particular product may be designated in a complete form, e.g., ISO-L-D
26、AB 68, or in an abbreviated form, e.g., L-DAB 68, the number indicating the viscosity grade according to ISO 3448. Table 1 Classification of lubricants for air compressors Code letter General application Particular application More specific application Product type and/or performance requirements Sy
27、mbol ISO-L Typical applications Remarks Normally highly refined mineral oils, may be semi- synthetic or full synthetic fluids DAA Normal duty Reciprocating crosshead and trunk pistons or Rotary drip feed (vane) Normally specially formulated semi- synthetic or fully synthetic fluids, may be specially
28、 formulated highly refined mineral oils DAB Severe duty Mineral oils, may be highly refined mineral oils DAG Lubricant drain cycles of u 2 000 h Normally specially formulated highly refined mineral oils or semi-synthetic fluids DAH Lubricant drain cycles of 2 000 h and u 4 000 h See Annex A Positive
29、 displacement air compressors with oil- lubricated compression chambers Rotary oil-flooded (vane and screw compressors) Normally specially formulated semi- synthetic or fully synthetic fluids DAJ Lubricant drain cycles of 4 000 h D Air compressors Positive displacement air compressors with oil-free
30、compression chambers Liquid-ring compressors and water-flooded vane and screw compressors Reciprocating oil- free compressors Rotary oil-free compressors Lubricants suitable for gears, bearings and transmissionsBSISO67433:2003 3Table 1 (continued) Code letter General application Particular applicati
31、on More specific application Product type and/or performance requirements Symbol ISO-L Typical applications Remarks Dynamic compressors Radial and axial turbo- compressors Lubricants suitable for bearings and gears DVA Low vacuum for non- aggressive gas Reciprocating and rotary drip feed Rotary oil-
32、flooded (vane and screw) DVB Low vacuum for aggressive gas Low vacuum is 10 2to 10 1kPa (10 3to 1 mbar) DVC Medium vacuum for non- aggressive gas DVD Medium vacuum for aggressive gas Medium vacuum is 10 1to 10 4kPa (1 to 10 3mbar) DVE High vacuum for non- aggressive gas Vacuum pumps Positive displac
33、ement vacuum pumps with oil- lubricated compression chambers Oil-sealed vacuum pumps (sliding vane, rotary and rotary plunger) DVF High vacuum for aggressive gas High vacuum is 10 4to 10 8kPa (10 3to 10 7mbar) BSISO67433:20034 Table 2 Classification of lubricants for process gas compressors Code let
34、ter General application Particular application More specific application Product type and/or performance requirements Symbol ISO-L Typical applications Remarks Gases that do not react with highly refined mineral oil or do not lower the viscosity to such an extent that mineral oil cannot be used High
35、ly refined mineral oils DGA N 2 , H 2 , NH 3 , Ar, CO 2at pressures below 10 4kPa (100 bar). He, SO 2 , H 2 S at all pressures. CO at pressures below 10 3kPa (10 bar) Ammonia has been found to react with certain additives used in some lubricants Gases of DGA type but containing moisture or condensab
36、le materials Special mineral oils DGB N 2 , H 2 , NH 3 , Ar, CO 2at pressures below 10 4kPa (100 bar) Ammonia has been found to react with certain additives used in some lubricants Gases with high solubility in mineral oil that reduce viscosity Usually synthetic fluids DGC aHydrocarbons at all press
37、ures. NH 3and CO 2at pressures above 10 4kPa (100 bar) Ammonia has been found to react with certain additives used in some lubricants Gases that react chemically with mineral oil Usually synthetic fluids DGD aHCI, CI 2 , O 2and oxygen enriched air at all pressures. CO 2at pressures above 10 3kPa (10
38、 bar) With O 2and oxygen- enriched air, mineral oils are prohibited and very few synthetic fluids are compatible D Compressors Positive displacement reciprocating and rotary compressors for all gases Compressors for refrigeration circuits or heat pump circuits, together with air compressors, are exc
39、luded Inert reducing gases that are very dry (dew point 40 C) Usually synthetic fluids DGE aN 2 , H 2 , Ar, at pressures below 10 4kPa (100 bar) These gases present lubrication difficulties and require special consideration NOTE Compression of gases at high pressures may cause difficulties (consult
40、the compressor suppliers). a The attention of the user is drawn to the fact that each of the categories DGC, DGD and DGE may, under the same designation, cover products of very different chemical composition that should not be mixed without consulting the suppliers.BSISO67433:2003 5Table 3 Classific
41、ation of lubricants for refrigeration compressors Code letter General application Refrigerant medium Lubricant grouping Particular lubricant type (Typical Non-inclusive) Symbol ISO-L Typical applications Remarks Ammonia (NH 3 ) Immiscible Highly refined mineral oil (naphthenic and paraffinic). Alkyl
42、 benzene Polyalphaolefin. DRA Commercial and industrial refrigeration. For flooded evaporators with open or semi-hermetic compressors. Miscible Polyalkylene glycol DRB Commercial and industrial refrigeration. For direct expansion evaporators; PAGs for open compressors and factory- built units. Hydro
43、fluoro- carbon (HFC) Immiscible Highly refined mineral oil (naphthenic/ paraffinic) Alkyl benzene Polyalphaolefin DRC Domestic refrigeration. Residential and commercial air- conditioning and heat pump. Bus air- conditioning systems. Likely in small closed-loop systems. Miscible Polyolester Polyvinyl
44、ether Polyalkylene glycol DRD Mobile air- conditioning. Domestic refrigeration. Residential and commercial air- conditioning and heat pump. Commercial refrigeration including transport refrigeration. D Compressors, refrigeration systems Chlorofluoro- carbon (CFC) Hydrochloro- fluorocarbon (HCFC) Mis
45、cible Highly refined mineral oil (naphthenic and paraffinic) Alkyl Benzene Polyolester Polyvinylether DRE Mobile air- conditioning. Domestic refrigeration. Residential and commercial air- conditioning and heat pump. Commercial refrigeration including transport refrigeration. Chlorine in the refriger
46、ant is beneficial for lubricity. BSISO67433:20036 Table 3 (continued) Code letter General application Refrigerant medium Lubricant grouping Particular lubricant type (Typical Non-inclusive) Symbol ISO-L Typical applications Remarks Carbon dioxide (CO 2 ) Miscible Highly refined mineral oil (naphthen
47、ic and paraffinic). Alkyl benzene Polyalkylene glycol Polyolester Polyvinylether DRF Mobile air- conditioning. Residential and commercial air- conditioning and heat pump. PAGs for open automotive compressors. Hydrocarbons (HC) Miscible Highly refined mineral oil (naphthenic and paraffinic). Polyalky
48、lene glycol Alkyl benzene Polyalphaolefin Polyolester Polyvinylether DRG Industrial refrigeration. Domestic refrigeration. Residential and commercial air- conditioning and heat pump. Typically factory-built low-charge units. Table 3 is applicable only to systems where the lubricant is exposed to the
49、 refrigerant. Additionally, where the possibility of incidental food contact exists with the lubricant, this lubricant shall comply with the regulations required by each country. BSISO67433:2003 7Annex A (informative) Information concerning duties of air compressors A.1 Introduction The following guidelines are given to help interested parties in differentiating between normal duty, and severe
