1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 14540:2013Hydraulic fluid power Dimensions and requirementsfor screw-to-connect quick-action couplings for use at apressure of 72 MPa (720 bar)BS ISO 14540:2013 BRITISH ST
2、ANDARDNational forewordThis British Standard is the UK implementation of ISO 14540:2013. The UK participation in its preparation was entrusted to TechnicalCommittee MCE/18/-/4, Connectors and associated components. A list of organizations represented on this committee can be obtained on request to i
3、ts secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013.ISBN 978 0 580 73940 8 ICS 23.100.40 Compliance with a British Stan
4、dard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2013.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 14540:2013 ISO 2013Hydraulic fluid power Dimensions and requ
5、irements for screw-to-connect quick-action couplings for use at a pressure of 72 MPa (720 bar)Transmissions hydrauliques Dimensions et exigences des raccords rapides de type visser pour usage une pression de 72 MPa (720 bar)INTERNATIONAL STANDARDISO14540First edition2013-03-15Reference numberISO 145
6、40:2013(E)BS ISO 14540:2013ISO 14540:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photoc
7、opying, or posting on the internet or an intranet, without prior written permission. Permission can be requested 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-
8、mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 14540:2013ISO 14540:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Dimensional requirements . 15 Performance requirements .36 Best practic
9、e 37 Designation 48 Marking 49 Identification statement (reference to this International Standard) 4Annex A (normative) Basic dimensions of the 1-18 UNS inch screw thread . 5Bibliography 6BS ISO 14540:2013ISO 14540:2013(E)ForewordISO (the International Organization for Standardization) is a worldwid
10、e federation of national 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
11、 committee. International 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.The procedures used to develop this docume
12、nt and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives
13、, Part 2. www.iso.org/directivesAttention 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. Details of any patent rights identified during the development of the
14、 document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 131, Fl
15、uid power systems, Subcommittee SC 4, Connectors and similar products and components.iv ISO 2013 All rights reservedBS ISO 14540:2013ISO 14540:2013(E)IntroductionIn hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit.Screw-to-
16、connect quick-action couplings conforming to this International Standard are designed to join or separate fluid conductors ensuring, at the same time, sufficient resistance and safety in applications characterized by very high working pressures up to 72 MPa (720 bar). ISO 2013 All rights reserved vB
17、S ISO 14540:2013BS ISO 14540:2013Hydraulic fluid power Dimensions and requirements for screw-to-connect quick-action couplings for use at a pressure of 72 MPa (720 bar)1 ScopeThis International Standard specifies dimensional and performance requirements for hydraulic screw-to-connect quick-action co
18、uplings designed to be used at pressure of 72 MPa (720 bar1) in static conditions as an interface between a hydraulic power unit and a tool. Typical applications for these couplings are related to hydraulic jacks, rams, clamping devices, hand tools, and cylinders.This International Standard covers t
19、wo types of such couplings: the “P” type, which has a poppet valve, and the “S” type, which has a spherical valve.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the
20、edition cited applies. For undated references, the latest edition of the referenced document (including amendments) applies.ISO 725, ISO inch screw threads Basic dimensionsISO 5598, Fluid power systems and components VocabularyISO 5864, ISO inch screw threads Allowances and tolerancesISO 7241-2, Hyd
21、raulic fluid power Quick-action couplings Part 2: Test methods3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 5598 and the following apply.3.1fluid lossfluid that exits the coupling when it is disconnected3.2residual static pressurestatic pressure rem
22、aining in the circuit without flow4 Dimensional requirementsCouplings shall conform to the dimensions shown in Figure 1 and given in Table 1.1) 1 bar = 100 kPa = 105Pa = 0,1 MPa; 1 Pa = 1 N/m2INTERNATIONAL STANDARD ISO 14540:2013(E) ISO 2013 All rights reserved 1BS ISO 14540:2013ISO 14540:2013(E)Sur
23、face roughness values in micrometresaThe shape of the valve is optional; “P” type version (with poppet valve) is shown.bThe shape of the valve is optional; “S” type version (with spherical valve) is shown.cUse dimension D4, unless the valve is spherical.dMaximum valve travel against stop.eSealing di
24、ameter.NOTE All dimensions and shape after L1and D1are left to the manufacturer.Figure 1 Dimensional requirementsTable 1 Dimensional requirementsDimensions in millimetresSize aD1D2cD3D4bL1L2L3L4L5R1 R2min min max max max max6,3 26,5 118 UNS15,77 15,851,918,95 19,157,75 7,982,0 4 0,40,5 1,00,610 31,5
25、 1-3/1616 UN18,96 19,042,525,32 25,479,30 9,522,5 4 0,40,5 1,30,6aSize designation corresponds to the nominal hose size of the recommended hose; see ISO 4397.bUse dimension D4unless the valve is spherical.cIn accordance with basic dimensions and formulae given in ISO 725 and ISO 5864, tolerance clas
26、s 2A. See Annex A for the dimensions of the 1-18 UNS thread.2 ISO 2013 All rights reservedBS ISO 14540:2013ISO 14540:2013(E)5 Performance requirements5.1 Couplings conforming to this International Standard shall meet or exceed the performance requirements specified in Table 2.Table 2 Performance req
27、uirements by coupling sizePerformance parameter Size 6,3 aSize 10 aWorking pressure b72 MPa (720 bar)Minimum burst pressure (coupled) c216 MPa (2 160 bar)Minimum burst pressure for the “P” type (uncoupled) c216 MPa (2 160 bar)Minimum burst pressure for the “S” type (uncoupled) c144 MPa (1 440 bar)Ra
28、ted flow d12 l/min 23 l/minMaximum pressure drop at rated flow d300 kPa (3 bar) 450 kPa (4,5 bar)Maximum fluid loss per disconnection e0,5 ml 1 mlMaximum residual static pressure for connection f10 MPa (100 bar)aSize designation corresponds to the nominal hose size of the recommended hose; see ISO 4
29、397.bSee 5.3.cSee 5.4.dSee 5.5.eSee 5.6.fInternal residual static pressure present in one coupling half.5.2 The performance requirements apply to couplings made from carbon steel. The use of any combination of other materials and the related performance requirements shall be agreed between the custo
30、mer and manufacturer.5.3 The working pressure shall be verified in both the coupled and uncoupled conditions by pressure impulse testing for 10 000 cycles at the working pressure (low-cycle fatigue test) using the test pressure wave form specified in ISO 7241-2.5.4 The burst pressure shall be verifi
31、ed by testing in both the coupled and uncoupled conditions in accordance with ISO 7241-2.5.5 The pressure drop at rated flow shall be verified by testing in accordance with ISO 7241-2.5.6 The fluid loss per disconnection shall be verified by testing in accordance with ISO 7241-2.5.7 The maximum resi
32、dual static pressure for connection shall be verified by connecting 100 times in accordance with ISO 7241-2 at 10 MPa (100 bar) pressure present in one coupling half only.6 Best practice6.1 Manufacturers of couplings conforming to this International Standard shall give proper written information to
33、the customer about safety, correct use, best practice, and maintenance in order to allow correct and safe use of the products.6.2 Couplings conforming to this International Standard are subject to very high internal pressure. The final user shall always use the most suitable protection devices when
34、using the product and shall keep out of the products range of action. ISO 2013 All rights reserved 3BS ISO 14540:2013ISO 14540:2013(E)6.3 Couplings conforming to this International Standard are not designed to be connected and disconnected under working pressure. However, Table 2 provides informatio
35、n about the maximum residual static pressure, which is present in one half only, that is allowable for connection.6.4 Couplings of the “S” type, which have a spherical valve, are not preferred for applications that require that the coupling be pressurized in the disconnected condition.7 DesignationH
36、ydraulic couplings conforming to this International Standard shall be designated as follows:a) the word “Coupling”, followed byb) a reference to this International Standard (i.e. ISO 14540), followed by a spaced hyphen, followed byc) the size, followed by a spaced hyphen, followed byd) the type desi
37、gnation, i.e. P for a coupling with a poppet valve or S for a coupling with a spherical valve.EXAMPLEHydraulic quick-action coupling conforming to this International Standard of size 6,3 and of the “P” type is designated as follows:Coupling ISO 14540:, 6,3 P8 MarkingCouplings conforming to this Inte
38、rnational Standard shall be permanently marked at least with the manufacturers name, logo, or product identification.9 Identification statement (reference to this International Standard)The following statement should be used in test reports, catalogues, and sales literature when electing to comply w
39、ith this International Standard: “Dimensional and performance requirements conform to ISO 14540, Hydraulic fluid power Dimensions and requirements for screw-to-connect quick-action couplings for use at a pressure of 72 MPa (720 bar).”4 ISO 2013 All rights reservedBS ISO 14540:2013ISO 14540:2013(E)An
40、nex A (normative) Basic dimensions of the 1-18 UNS inch screw threadTables A.1 and A.2 provide the basic dimensions of the 1-18 UNS inch screw thread. They provide dimensions of, respectively, the external and internal threads.Table A.1 Dimensions for 1-18 UNS, class 2A, inch screw threads (external
41、)Thread AllowanceMajor diameter Pitch diameter Minor diametermax min max min max1-18 UNSin 0,0014 0,9986 0,9899 0,9625 0,9578 0,9325mm 0,037 25,364 25,144 24,447 24,329 23,686Table A.2 Dimensions for 1-18 UNS, class 2B, inch screw threads (internal)ThreadMinor diameter Pitch diameter Major diameterm
42、ax min max min min1-18 UNSin 0,953 0,940 0,9701 0,9639 1,0000mm 24,206 23,876 24,640 24,484 25,400 ISO 2013 All rights reserved 5BS ISO 14540:2013ISO 14540:2013(E)Bibliography1 ISO 4397, Fluid power connectors and associated components Nominal outside diameters of tubes and nominal hose sizes6 ISO 2
43、013 All rights reservedBS ISO 14540:2013BS ISO 14540:2013ISO 14540:2013(E) ISO 2013 All rights reservedICS 23.100.40Price based on 6 pagesThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, inform
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