1、BRITISH STANDARD BS 7847:1996 ISO 4399:1995 Fluid power systems and components Connectors and associated components Nominal pressures ICS 23.100.30BS7847:1996 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standa
2、rds Board and comes intoeffect on 15 January 1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference MCE/18 Draft for comment 94/703835 DC ISBN 0 580 25238 8 Committees responsible for this British Standard The preparation of this British Standard was e
3、ntrusted to Technical Committee MCE/18, Fluid power systems and components, upon which the following bodies were represented: Associaton of British Mining Equipment Companies British Compressed Air Society British Fluid Power Association British Hydrodynamics Research Association British Iron and St
4、eel Producers Association Department of Trade and Industry (National Engineering Laboratory) Ministry of Defence The following bodies were also represented in the drafting of the standard through subcommittees and panels: Engineering Equipment and Materials Users Association University of Bath Amend
5、ments issued since publication Amd. No. Date CommentsBS7847:1996 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii Introduction 1 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Units 1 5 Nominal pressures 1 6 Identification statement 1 Table 1 Nominal p
6、ressures (gauge) 1 List of references Inside back coverBS7847:1996 ii BSI 08-1999 National foreword This British Standard has been prepared by Technical Committee MCE/18 and is identical with ISO 4399:1995 Fluid power systems and components Connectors and associated components Nominal pressures, pub
7、lished by the International Organization for Standardization (ISO). ISO 4399 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC4, Connectors and similar products and components, in which the UK played an active part. Cross-references The Technical Committee has revi
8、ewed the provisions of ISO 2944:1974 and ISO5598:1985 to which normative reference is made in the text and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Stand
9、ards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and 2, an inside back cover and a back cover. This sta
10、ndard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS7847:1996 BSI 08-1999 1 Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under press
11、ure within a circuit. Systems and components are generally designed and marketed for use at a specific fluid pressure level. Components are connected through their ports and associated fluid conductor fitting ends. 1 Scope This International Standard specifies a selection of nominal pressures for hy
12、draulic and pneumatic fluid power connectors and associated components. NOTE 1There may be a need to provide a selection of nominal pressures for connectors and associated components used in applications where the external pressure on the components is greater than the internal pressure, for example
13、 vacuum service. An International Standard that deals with this subject will be established in due course. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the ed
14、itions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of current
15、ly valid International Standards. ISO 2944:1974, Fluid power systems and components Nominal pressures. ISO 5598:1985, Fluid power systems and components Vocabulary. 3 Definitions For the purposes of this International Standard, the definitions given in ISO 5598 and the following definition apply. 3.
16、1 nominal pressure a pressure value assigned to a component or a system for the purpose of convenient designation NOTE 2This definition is the same as that used in ISO 2944 and is intended solely to complete this International Standard. A more comprehensive definition for general purposes may be est
17、ablished subsequently. 4 Units 4.1 Nominal pressures shall be expressed in kilopascals (kPa) or megapascals (MPa), depending on the pressure level, with the equivalent value in bars 1)in parentheses. 4.2 The nominal pressure shall be assumed to be gauge pressure, i.e. the pressure above atmospheric
18、pressure, when no modifier is given. 4.3 Nominal pressures other than those specified here shall be selected from ISO 2944. 5 Nominal pressures Nominal pressures for connectors and associated components shall be selected from Table 1. Table 1 Nominal pressures (gauge) 6 Identification statement (Ref
19、erence to this International Standard) Use the following statement in test reports, catalogues and sales literature when electing to comply with this International Standard: “Nominal pressures for connectors and associated components selected from ISO 4399:1995, Fluid power systems and components Co
20、nnectors and associated components Nominal pressures.” 1) 1 bar = 100 kPa = 0,1 MPa 0,25 MPa (2,5 bar) 0,63 MPa (6,3 bar) 1 MPa (10 bar) 1,6 MPa (16 bar) 2,5 MPa (25 bar) 4 MPa (40 bar) 6,3 MPa (63 bar) 10 MPa (100 bar) 16 MPa (160 bar) 20 MPa (200 bar) 25 MPa (250 bar) 31,5 MPa (315 bar) 35 MPa (35
21、0 bar) 40 MPa (400 bar) 50 MPa (500 bar) 63 MPa (630 bar) NOTENon-preferred values are shown in square brackets.2 blankBS7847:1996 BSI 08-1999 List of references See national foreword.BS 7847:1996 ISO 4399:1995 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the indepe
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