ISO-9974-1-1996.pdf
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1、IS0 7974-1 9b 4853703 Ob59006 T82 E INTERNATIONAL STANDARD IS0 997411 First edition 1996-04-1 5 Connections for general use and fluid power - Ports and stud ends with E O 261 threads with elastomeric or metal-to-metal sealing - Part 1: Threaded ports Raccordements pour applications gnrales et transm
2、issions hydrauliques et pneumatiques - Orifices et lments mles filetage IS0 261 et joint en lastomre ou tanchit mtal sur mtal - Partie : Orifices filets Reference number IS0 9974-1 11 996(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA
3、 Technical Standards 1/9972545001 Not for Resale, 04/26/2007 00:28:31 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9974-II 9b m 4853903 Ob59007 939 m IS0 997 4- 1 : 1 996( El Foreword IS0 (the International Organization for Standardization) is a worldwide fed- eratio
4、n of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be rep- resented on that committe
5、e. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 col- laborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the tec
6、hnical committees are cir- culated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 9974-1 was prepared jointly by Technical Committees ISOflC 5, Ferrous metal pipes and metall
7、ic fittings, Sub- committee SC 5, Threaded or plain end butt-welding fittings, threads, gauging of threads, and ISO/TC 131, Fluid power systems, Subcommittee SC 4, Connectors and similar products and components. IS0 9974 consists of the following parts, under the general title Connec- tions for gene
8、ral use and fluid power - Ports and stud ends with IS0 261 threads with elastomeric or metal-to-metal sealing. - Part 1: Threaded ports - - Part 2: Stud ends with elastomeric sealing (type E) Part 3: Stud ends with metal-to-metal sealing (type 9) The performance requirements, dimensions and designs
9、are defined for port and stud end connections for the L and S series in IS0 9974-2 and for the LL, L and S series in IS0 9974-3. Significant testing over more than 30years of use has confirmed the performance requirements of these port and stud end connections. Stud ends conforming to IS0 9974-2 and
10、 9974-3 are identical to those conforming to DIN 3852-1. IS0 9974-2 stud ends are used on IS0 8434-1 and IS0 8434-4 fittings, and IS0 9974-3 stud ends are used on IS0 8434-1 fittings. Annex A of this part of IS0 9974 is for information only. O IS0 1996 All rights reserved. Unless otherwise specified
11、, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 CH-1 2 1 1 Genve 20 Switzerland Pr
12、inted in Switzerland II Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 00:28:31 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9974-1 96 4851903 0
13、659008 B55 W 0 IS0 IS0 9974-1:1996(E) Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. In general appli- cations, a fluid may be conveyed under pressure. Components are connected through their threaded
14、 ports by fluid conduc- tor fittings to tubes and pipes or to hose fittings and hoses. Ports are an integral part of fluid power components, such as pumps, motors, valves, cylinders, etc. iii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NAS
15、A Technical Standards 1/9972545001 Not for Resale, 04/26/2007 00:28:31 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9974-3 76 = 4853903 Ob59009 771 = INTERNATIONAL STANDARD 0 IS0 IS0 9974-1 :1996(E) Connections for general use and fluid power - Ports and stud ends wi
16、th IS0 261 threads with elastomeric or metal-to-metal sealing - Part i: Threaded ports 1 Scope This part of IS0 9974 specifies dimensions for ports with IS0 261 threads and elastomeric (type E) or metal-to- metal (type B) sealing for general use and in fluid power applications with the stud ends det
17、ailed in IS0 9974-2 and IS0 9974-3. It also specifies test methods and the designation of these ports. Ports in accordance with this part of IS0 9974 may be used at working pressures up to 63 MPa (630 bar 1). The permissible working pressure depends upon the port size, materials, design, working con
18、ditions, ap- plication, etc. standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Stan- dards. IS0 261 :- 2), IS0 general-purpose metric screw threads - General plan. IS0 5598:1985, Fluid power systems and components - Vocabulary. IS0 9974-2: 1 996, C
19、onnections for general use and fluid power - Ports and stud ends with IS0261 threads with elastomeric or metal-to-metal sealing - Part 2: Stud ends with elastomeric sealing (type E). For threaded ports and stud ends specified in new designs in hydraulic fluid power applications, only IS0 6149 is to
20、be used. Threaded ports and stud ends in accordance with IS0 1179, IS0 9974 and IS0 11926 are not to be used for new designs in hydraulic fluid power applications. Is0 9974-3:1996, COnneCtinS fr general Use and fluid power - Ports and stud ends with IS0261 threads with elastomeric or metal-to-metal
21、sealing - Part 3: Stud ends with metal-to-metal sealing (type B). 3 Definitions 2 Normative references For the purposes of this part of IS0 9974, the defi- nitions given in IS0 5598 apply. The following standards contain provisions which, through reference in this text, constitute provisions of this
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