1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 7790:2013Hydraulic fluid power Four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08 and 10 Clamping dimensionsBS ISO 7790:2013
2、 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 7790:2013. It supersedes BS ISO 7790:1997, which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e M C E / 1 8 / - / 5 , C o n t r o l c o m p o n e n t s .
3、A list of organizations represented on this committee can be obtained on request to its 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 Stand
4、ards Limited 2013.ISBN 978 0 580 73621 6 ICS 23.100.50 Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationDate T e x
5、 t a f f e c t e dBS ISO 7790:2013 ISO 2013Hydraulic fluid power Four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08 and 10 Clamping dimensionsTransmissions hydrauliques Appareils empilables et distributeurs quatre orifices, de tailles 02, 03, 05, 07, 08
6、 et 10 Dimensions de montageINTERNATIONAL STANDARDISO7790Third edition2013-03-01Reference numberISO 7790:2013(E)BS ISO 7790:2013ISO 7790:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be repr
7、oduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, 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 requeste
8、r.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 7790:2013ISO 7790:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope .12 Normative references 13 T
9、erms and definitions .14 Symbols 15 Tolerances .16 Dimensions .17 Working pressure 38 Identification statement (Reference to this International Standard) .3Bibliography 4BS ISO 7790:2013ISO 7790:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of nati
10、onal 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. Internat
11、ional 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 rul
12、es 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 at l
13、east 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 7790 was prepared by Technical Committee ISO/TC 131,
14、 Fluid power systems, Subcommittee SC 5, Control products and components.This third edition cancels and replaces the second edition (ISO 7790:1997), which has been technically revised.iv ISO 2013 All rights reservedBS ISO 7790:2013ISO 7790:2013(E)IntroductionIn hydraulic fluid power systems, power i
15、s transmitted and controlled through a liquid under pressure within an enclosed circuit. Typical components found in such systems are hydraulic valves and hydraulic modular stack valves. These devices control flow direction, pressure, or flow rate of liquids in the enclosed circuit. ISO 2013 All rig
16、hts reserved vBS ISO 7790:2013BS ISO 7790:2013Hydraulic fluid power Four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08 and 10 Clamping dimensions1 ScopeThis International Standard specifies clamping dimensions of four-port modular stack valves and four-
17、port directional control valves, sizes 02, 03, 05, 07, 08, and 10, on mounting surfaces. The dimensions and sizes conform to ISO 4401 so as to ensure interchangeability of these valves and to reduce the number of fixing devices to be used.It applies to clamping dimensions of four-port modular stack
18、valves and four-port directional control valves which represent current practice. They are generally applicable to industrial equipment.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated
19、 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4401, Hydraulic fluid power Four-port directional control valves Mounting surfacesISO 5598, Fluid power systems and components VocabularyISO 5783,
20、 Hydraulic fluid power Code for identification of valve mounting surfaces and cartridge valve cavities3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 5598 apply.4 SymbolsFor the purposes of this International Standard, the following letter symbols app
21、ly:a) H1identifies clamping length for the fixing devices on directional control valves;b) H2identifies overall heights of modular stack valves.5 TolerancesFor tolerances and other data relating to the side of a modular stack valve on which another modular stack valve or a directional control valve
22、is mounted, see ISO 4401.6 DimensionsClamping dimensions for modular stack valves and directional control valves, sizes 02, 03, 05, 07, 08, and 10, in accordance with ISO 5783, with four service ports, are shown in Figure 1 and given in Tables 1 and 2. Table 1 lists the preferred dimensions and shou
23、ld be used for new valve designs. Table 2 lists INTERNATIONAL STANDARD ISO 7790:2013(E) ISO 2013 All rights reserved 1BS ISO 7790:2013ISO 7790:2013(E)alternative non-preferred dimensions that are in current use but which should not be used for new valve designs. The mounting surface shall be in acco
24、rdance with ISO 4401.a) Directional control valve b) Modular stack valveaDimension H1is understood to be the mounting height (clamping length for fixing bolts) where fixing bolts with heads are used. Where studs are used, consult sales literature on valve heights before determining the length of the
25、se studs.bDimension H2is understood to be the overall mounting height of a modular stack valve, including O-ring plate height, if necessary.Figure 1 Clamping dimensions for four-port directional control valves and modular stack valves, sizes 02, 03, 05, 07, 08, and 10 (mounting surface in accordance
26、 with ISO 4401)Table 1 Preferred clamping dimensions for four-port directional control valves and modular stack valves, sizes 02, 03, 05, 07, 08, and 10 (mounting surface in accordance with ISO 4401)Dimensions in millimetresValve type Dimension Size 02 Size 03 Size 05 Size 07 Size 08 Size 10Directio
27、nal control valveH1 322022203020342042204920Modular stack valve H2a30050 ,40030 ,50030 ,50050 ,60050 ,70050 ,NOTE The supplier shall establish the maximum working pressure for valves, subplates, and the manifold blocks.aWhen dimension H2is not acceptable for design reasons, it shall be increased or
28、decreased in increments of 10 mm.Table 2 Alternative non-preferred clamping dimensions for four-port directional control valves and modular stack valves, sizes 02, 03, 05, 07, 08, and 10 (mounting surface in accordance with ISO 4401)Dimensions in millimetresValve type Dimension Size 02 Size 03 Size
29、05 Size 07 Size 08 Size 10Directional control valveH1None 42205020432057203720Modular stack valve H2None None None 55050 ,55050 ,85050 ,NoneNOTE The supplier shall establish the maximum working pressure for valves, subplates, and the manifold blocks.2 ISO 2013 All rights reservedBS ISO 7790:2013ISO
30、7790:2013(E)7 Working pressureFor an indication of the maximum limit of the working pressure, see Note in Table 1.8 Identification statement (Reference to this International Standard)Use the following statement in test reports, catalogues, and sales literature when electing to comply with this Inter
31、national Standard:“Modular stack valves and directional control valves clamping dimensions conform to ISO 7790, Hydraulic fluid power Four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08 and 10 Clamping dimensions. ” ISO 2013 All rights reserved 3BS ISO 7
32、790:2013ISO 7790:2013(E)Bibliography1 ISO 129-1, Technical drawings Indication of dimensions and tolerances Part 1: General principles2 ISO 286-1, Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 1: Basis of tolerances, deviations and fits3 ISO 965-1, ISO
33、general-purpose metric screw threads Tolerances Part 1: Principles and basic data4 ISO 1101, Geometrical product specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out5 ISO 1302, Geometrical Product Specifications (GPS) Indication of surface texture in tec
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