1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 6162-1:2012Hydraulic fluid power Flange connections with split or one-piece flange clamps and metric or inch screwsPart 1: Flange connectors, ports and mounting surfaces f
2、or use at pressures of 3,5 MPa (35 bar) to 35 MPa (350 bar), DN 13 to DN 127BS ISO 6162-1:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 6162-1:2012. Itsupersedes BS ISO 6162-1:2002 which is withdrawn.The UK participation in its preparation was entrusted
3、to TechnicalCommittee MCE/18/-/4, Connectors and associated components.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplica
4、tion. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 66845 6ICS 23.100.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee
5、 on 31 December 2012.Amendments issued since publicationDate Text affectedBS ISO 6162-1:2012 ISO 2012Hydraulic fluid power Flange connections with split or one-piece flange clamps and metric or inch screws Part 1: Flange connectors, ports and mounting surfaces for use at pressures of 3,5 MPa (35 bar
6、) to 35 MPa (350 bar), DN 13 to DN 127Transmissions hydrauliques Raccordements bride avec demi-brides fendue ou bride monobloc et vis mtriques ou en inches Partie 1: Brides, orifices et surfaces de montage pour utilisation des pressions de 3,5 MPa (35 bar) 35 MPa (350 bar), DN 13 DN 127INTERNATIONAL
7、 STANDARDISO6162-1Second edition2012-12-15Reference numberISO 6162-1:2012(E)BS ISO 6162-1:2012ISO 6162-1:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form o
8、r by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mai
9、l copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 6162-1:2012ISO 6162-1:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Terms and definitions .24 Material .25 Selection 36 Dimensions and tolerances 47 Corrosion protecti
10、on 48 Pressure/temperature requirements 59 Marking .510 Designation of flange connections and their parts 5Annex A (informative) Recommended assembly procedures and screw torque levels for flange connections conforming to ISO 6162-1 .18Annex B (informative) O-ring designation codes and dimensions .2
11、0Bibliography .21BS ISO 6162-1:2012ISO 6162-1:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Ea
12、ch member body interested in a subject for which a technical committee has been established 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. ISO collaborates closely with the Internatio
13、nal Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards
14、 adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by 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
15、patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 6162-1 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 4, Connectors and similar products and components.This second edition cancels and replaces the first edition
16、(ISO 6162-1:2002), which has been technically revised. It also incorporates the Technical Corrigendum ISO 6162-1:2002/Cor.1:2004. In this second edition, property class 8.8 screws in accordance with ISO 898-1 have been deleted to avoid the potential problem of a user using these screws in an applica
17、tion that requires screws conforming to the requirements of property class 10.9.ISO 6162 consists of the following parts, under the general title Hydraulic fluid power - Flange connections with split or one-piece flange clamps and metric or inch screws: Part 1: Flange connectors, ports and mounting
18、surfaces for use at pressures of 3,5 MPa (35 bar) to 35 MPa (350 bar), DN 13 to DN 127 Part 2: Flange connectors, ports and mounting surfaces for use at a pressure of 42 MPa (420 bar), DN 13 to DN 76iv ISO 2012 All rights reservedBS ISO 6162-1:2012ISO 6162-1:2012(E)IntroductionIn hydraulic fluid pow
19、er systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. Components are interconnected through their ports and associated fluid conductor connector ends. ISO 2012 All rights reserved vBS ISO 6162-1:2012BS ISO 6162-1:2012Hydraulic fluid power Flange
20、connections with split or one-piece flange clamps and metric or inch screws Part 1: Flange connectors, ports and mounting surfaces for use at pressures of 3,5 MPa (35 bar) to 35 MPa (350 bar), DN 13 to DN 127WARNING Users of this part of ISO 6162 should ensure that suitable material is chosen for th
21、e port to maintain the required working pressure, if carbon steel is not used. In addition, flanged head material and wall thickness depend on the selected working pressure and the d8diameter.1 ScopeThis part of ISO 6162 gives general and dimensional specifications for flanged heads, split flange cl
22、amps (FCS and FCSM), one-piece flange clamps (FC and FCM), ports and mounting surfaces applicable to four-screw, split and one-piece flange clamp type tube connectors and hose fittings for use at pressures of 3,5 MPa (35 bar1) to 35 MPa (350 bar). It also specifies the dimensions of the seals to be
23、used, as well as the grooves that house the seals.This part of ISO 6162 also recognizes the need to accommodate metric screw fasteners (type 1), as well as to provide a means to use existing inch screw fasteners (type 2).These connections are intended for application in hydraulic systems on industri
24、al and commercial products where it is desired to avoid the use of threaded connectors.Surges of pressure higher than the nominal ratings can reduce the ability of the flange connections to retain the hydraulic fluid. This needs to be taken into account in the design of the hydraulic system.2 Normat
25、ive referencesThe 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 the referenced document (including any amendments) applies.ISO 48, Rubber, vulcanized or thermo
26、plastic Determination of hardness (hardness between 10 IRHD and 100 IRHD)ISO 261, ISO general-purpose metric screw threads General planISO 263, ISO inch screw threads General plan and selection for screws, bolts and nuts Diameter range 0,06 to 6 inISO 724, ISO general-purpose metric screw threads Ba
27、sic dimensionsISO 725, ISO inch screw threads Basic dimensionsISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch threadISO 1302, Geometrical Product Specification Indications
28、of surface texture in technical product documentationISO 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications1) 1 bar = 0,1 MPa = 105Pa; 1 Pa = 1 N/m2.INTERNATIONAL STANDARD ISO 6162-1:2012(E) ISO 2012 All rights reserved 1BS ISO 61
29、62-1:2012ISO 6162-1:2012(E)ISO 3601-1, Fluid power systems O-rings Part 1: Inside diameters, cross-sections, tolerances and designation codesISO 3601-3, Fluid power systems O-rings Part 3: Quality acceptance criteriaISO 4017, Hexagon head screws Product grades A and BISO 4762, Hexagon socket head ca
30、p screwsISO 5598, Fluid power systems and components VocabularyISO 7089, Plain washers Normal series Product grade AISO 9227, Corrosion tests in artificial atmospheres Salt spray testsISO 19879, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connecti
31、onsANSI/ASME B18.3, Socket Cap, Shoulder, and Set Screws, Hex and Spline Keys (Inch Series)ASTM A574, Standard Specification for Alloy Steel Socket-Head Cap ScrewsSAE J429, Mechanical and Material Requirements for Externally Threaded Fasteners3 Terms and definitionsFor the purposes of this document,
32、 the terms and definitions given in ISO 5598 apply.4 Material4.1 Split flange clamps (see Figure 3) and one-piece flange clamps (see Figure 4) shall be ferrous material with the following properties in the finished condition:For nominal flange size DN 13: minimum yield strength: 220 MPa minimum elon
33、gation at fracture: 3 %and for all other nominal flange sizes: minimum yield strength: 415 MPa minimum elongation at fracture: 3 %.4.2 Flanged heads shall be ferrous material with the following properties in the finished condition: minimum yield strength: 215 MPa minimum elongation at fracture: 10 %
34、.4.3 Unless otherwise specified, one of the following screw options shall be used:a) hexagon head screws conforming to ISO 4017 of property class 10.9 (minimum) in accordance with ISO 898-1, orb) socket head screws conforming to ISO 4762 of property class 10.9 (minimum) in accordance with ISO 898-1,
35、 orc) inch hexagon head screws conforming to SAE J429 of grade 8 (minimum), or2 ISO 2012 All rights reservedBS ISO 6162-1:2012ISO 6162-1:2012(E)d) inch socket head screws conforming to the product specifications of ANSI/ASME B18.3 and made of material conforming to ASTM A574.4.4 Unless otherwise spe
36、cified, the O-rings shall be made of NBR (nitrile) with a hardness of (90 5) IRHD, measured in accordance with ISO 48, for use at the pressure and temperature requirements given in Clause 8 and Table 1 or Table 2, and for testing. The O-rings specified in Tables 1 and 2 shall conform to the dimensio
37、ns given in ISO 3601-1 for the relevant size code, conform to tolerance class A in ISO 3601-1 and shall meet or exceed the O-ring quality acceptance criteria for grade N of ISO 3601-3. If the flange connection is expected to be used at temperatures higher than specified in Clause 8, O-rings made of
38、materials that meet the higher temperature requirements shall be used.NOTE Connectors conforming to this part of ISO 6162 contain elastomeric seals. Unless otherwise specified, connectors are made and delivered with elastomeric seals for use within the specified working temperature range with petrol
39、eum base hydraulic fluids. The use of these connectors and elastomeric seals with other hydraulic fluids might result in a reduced working temperature range or might render the connectors unsuitable for the application. Upon request, manufacturers may supply connectors with elastomeric seals which a
40、re intended for use with non-petroleum base hydraulic fluid and which meet the specified working temperature range of the connectors.4.5 The surface pressure between the screw head and the flange clamp should be considered. The use of hardened washers is recommended; however, flange connections conf
41、orming to previous editions of ISO 6162-1 might not accommodate the use of this type of washer. Washers, if used, shall conform to ISO 7089 (HV 300) type A and be sized for the corresponding screw. Plain washers conforming to ANSI/ASME B18.22.1, type B narrow series HV 300, may be substituted when u
42、sing type 2 screws; see Tables 1 and 2 for exceptions.5 Selection5.1 Ensure that the flange connection needs to conform to ISO 6162-1, taking into account the maximum working pressure and the dimensional differences between ISO 6162-1 and ISO 6162-2. Parts shall not be interchanged between flange co
43、nnections that conform to ISO 6162-1 and 6162-2.5.2 For new design, select the flange connector size by the nominal flange size that corresponds to the maximum diameter of the bore through the flanged head (dimension d2) or the flange pad (dimension d1).5.3 Match the nominal flange sizes for the cla
44、mp, port, and flanged head.5.4 Select either type 1 (for use with either metric or inch screws) or type 2 (for use with inch screws only), split (FCS or FCSM) or one-piece (FC or FCM) flange clamps and ports, depending on whether metric or inch screw fasteners are required. Type 2 (inch) flange port
45、s and assemblies shall not be used for new designs in hydraulic fluid power.NOTE The selection of the flanged head and O-ring is not affected by the difference in metric or inch screw fasteners.5.5 Select screws, O-rings, and washer sizes corresponding to the nominal flange size and from the tables
46、corresponding to type 1 (Table 1) or type 2 (Table 2).5.6 To match an existing pad, measure the bolt pattern (dimensions l7and l10), and determine screw type to select the proper flanged head and clamp. To avoid interchange between flange connections conforming to ISO 6162-1 and ISO 6162-2, the patt
47、ern should be measured with an accuracy of 1 mm or less.5.7 To match an existing flanged head, measure the diameter (dimension d10) and thickness (dimension l14) with an accuracy of 0,5 mm or less.5.8 Select a one-piece flange clamp (FC or FCM) or a split flange clamp (FCS or FCSM). ISO 2012 All rig
48、hts reserved 3BS ISO 6162-1:2012ISO 6162-1:2012(E)6 Dimensions and tolerances6.1 Dimensions of type 1 flange assemblies, including screws, shall be in accordance with Figure 1 (for split flange clamp) or Figure 2 (for one-piece clamp) and Table 1. Dimensions of type 2 flange assemblies, including sc
49、rews, shall be in accordance with Figure 1 (for split flange clamp) or Figure 2 (for one-piece clamp) and Table 2.6.2 Dimensions of split flange clamps shall be in accordance with Figure 3 and Table 3. Dimensions of one-piece flange clamps shall be in accordance with Figure 4 and Table 3. A maximum draft angle of 6 from surface B as shown in Figure 3 or Figure 4 or from the middle of the side each way is allowed.6.3 Dimensions of flanged heads shall be in accordance with Figure 5 and T
