1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS ISO 7790:2013 Hydraulic 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:
2、2013 BRITISH STANDARD National foreword This 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 It supersedes BS ISO 7790:1997, which is withdrawn.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
3、n t s . 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
4、BSI Standards Limited 2013. ISBN 978 0 580 73621 6 ICS 23.100.50 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2013. Amendments issued since publicat
5、ion Date T e x t a f f e c t e dBS ISO 7790:2013 ISO 2013 Hydraulic fluid power Four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08 and 10 Clamping dimensions Transmissions hydrauliques Appareils empilables et distributeurs quatre orifices, de tailles 02
6、, 03, 05, 07, 08 et 10 Dimensions de montage INTERNATIONAL STANDARD ISO 7790 Third edition 2013-03-01 Reference number ISO 7790:2013(E)BS ISO 7790:2013ISO 7790:2013(E)ii ISO 2013 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2013 All rights reserved. Unless otherwise specified, no part of thi
7、s publication may be reproduced 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 th
8、e country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 7790:2013ISO 7790:2013(E) ISO 2013 All rights reserved iii Contents Page Foreword iv Introduction v 1
9、 Scope . 1 2 Normative references 1 3 Terms and definitions . 1 4 Symbols 1 5 Tolerances . 1 6 Dimensions . 1 7 Working pressure 3 8 Identification statement (Reference to this International Standard) .3 Bibliography 4BS ISO 7790:2013ISO 7790:2013(E) Foreword ISO (the International Organization for
10、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. Each member body interested in a subject for which a technical committee has been established has the r
11、ight 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 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Internation
12、al 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 adopted by the technical committees are circulated to the member bodies for voting. Publication as
13、 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 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. IS
14、O 7790 was prepared by Technical Committee ISO/TC 131, 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(
15、E) Introduction In hydraulic fluid power systems, power is 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
16、rate of liquids in the enclosed circuit. ISO 2013 All rights 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 dimensions 1 Scope This International Standard specifies clam
17、ping dimensions of four-port modular stack valves and four- 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.
18、It applies to clamping dimensions of four-port modular stack valves and four-port directional control valves which represent current practice. They are generally applicable to industrial equipment. 2 Normative references The following documents, in whole or in part, are normatively referenced in thi
19、s document and are indispensable for its application. For dated 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 surfaces
20、 ISO 5598, Fluid power systems and components Vocabulary ISO 5783, Hydraulic f luid power Code for identification of valve mounting surfaces and cartridge valve cavities 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 apply. 4 Symbols For the pu
21、rposes of this International Standard, the following letter symbols apply: a) H 1identifies clamping length for the fixing devices on directional control valves; b) H 2identifies overall heights of modular stack valves. 5 Tolerances For tolerances and other data relating to the side of a modular sta
22、ck valve on which another modular stack valve or a directional control valve is mounted, see ISO 4401. 6 Dimensions Clamping 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
23、 1 and given in Tables 1 and 2. Table 1 lists the preferred dimensions and should be used for new valve designs. Table 2 lists INTERNATIONAL ST ANDARD 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 whic
24、h should not be used for new valve designs. The mounting surface shall be in accordance with ISO 4401. a) Directional control valve b) Modular stack valve a Dimension H 1is understood to be the mounting height (clamping length for fixing bolts) where fixing bolts with heads are used. Where studs are
25、 used, consult sales literature on valve heights before determining the length of these studs. b Dimension H 2is 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 a
26、nd modular stack valves, sizes 02, 03, 05, 07, 08, and 10 (mounting surface in accordance 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
27、 in millimetres Valve type Dimension Size 02 Size 03 Size 05 Size 07 Size 08 Size 10 Directional control valve H 1 Modular stack valve H 2 a NOTE The supplier shall establish the maximum working pressure for valves, subplates, and the manifold blocks. aWhen dimension H 2is not acceptable for design
28、reasons, it shall be increased or 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 millimetres Valve
29、 type Dimension Size 02 Size 03 Size 05 Size 07 Size 08 Size 10 Directional control valve H 1 None Modular stack valve H 2 None None None NoneNOTE The supplier shall establish the maximum working pressure for valves, subplates, and the manifold blocks.2 ISO 2013 All rights reservedBS ISO 7790:2013IS
30、O 7790:2013(E) 7 Working pressure For 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
31、 International 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
32、 ISO 7790:2013ISO 7790:2013(E) Bibliography 1 ISO 129-1, Technical drawings Indication of dimensions and tolerances Part 1: General principles 2 ISO 286-1, Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 1: Basis of tolerances, deviations and fits 3 ISO 9
33、65-1, ISO general-purpose metric screw threads Tolerances Part 1: Principles and basic data 4 ISO 1101, Geometrical product specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out 5 ISO 1302, Geometrical Product Specifications (GPS) Indication of surface te
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