BS EN 28659-1992 Thermoplastics valves - Fatigue strength - Test method《热塑性塑料阀门 疲劳强度 试验方法》.pdf
《BS EN 28659-1992 Thermoplastics valves - Fatigue strength - Test method《热塑性塑料阀门 疲劳强度 试验方法》.pdf》由会员分享,可在线阅读,更多相关《BS EN 28659-1992 Thermoplastics valves - Fatigue strength - Test method《热塑性塑料阀门 疲劳强度 试验方法》.pdf(10页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS EN 28659:1992 BS2782-11: Method1132: 1992 ISO8659:1989 Thermoplastics valves Fatiguestrength Test method The European Standard EN28659:1990 has the status of a BritishStandard UDC621.646-036.073:620.169.1BSEN28659:1992 This BritishStandard, having been prepared under the directio
2、nof the Plastics and Rubber Standards Policy Committee, was published underthe authority of the Standards Board and comes intoeffect on 15October1992 BSI01-2000 The following BSI references relate to the work on this standard: Committee reference PRM/61 Announced in BSI News, August1992 ISBN 0 580 2
3、1168 1 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisatio
4、n Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of I
5、reland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiserin
6、gskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom BritishStandards Institution Amendments issued since publication Amd. No. Date CommentsBSEN28659:1992 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text
7、of EN 28659 3 National annex NA (informative) Committees responsible Inside back coverBSEN28659:1992 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Plastics and Rubber Standards Policy Committee and is the English language version of EN28659:1990 T
8、hermoplastics valves Fatigue strength Test method, published by the European Committee for Standardization (CEN). EN28659:1990 is identical with ISO8659:1989 published by the International Organization for Standardization (ISO). A British Standard does not purport to include all the necessary provis
9、ions of a contract. Users of British Standards 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, theEN title page, p
10、ages2 to4, an inside back cover and a back cover. This standard 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN28659 December1990 UDC 621.646-0
11、36.073:620.169.1 Descriptors: Plastics, thermoplastics resins, cocks, torque, fatigue tests, fatigue life English version Thermoplastics valves Fatigue strength Test method (ISO8659:1989) Robinets en matriaux thermoplastiques Rsistance la fatigue Mthode dessai (ISO8659:1989) Armaturen aus Thermoplas
12、ten Ermdungsfestigkeit Prfverfahren (ISO8659:1989) This European Standard was approved by CEN on1990-11-08. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterat
13、ion. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translat
14、ion under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
15、Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1990 Copyright reserved to CEN members Ref.No.EN28659:1990EE
16、N28659:1990 BSI 01-2000 2 Foreword Based on the positive result of the Formal Vote procedure, the International Standard ISO8659:1989 “Thermoplastics valves Fatigue strength Test method” is adopted as a European Standard. In accordance with the Common CEN/CENELEC Rules, the following countries are b
17、ound to implement this standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 3.1 nominal pre
18、ssure (PN) 3 3.2 closing torque 3 3.3 fluid velocity 3 3.4 reference dimensions 3 4 Apparatus 3 5 Procedure 3 5.1 Test requirements to be taken from product standards 3 5.2 Endurance test 4 6 Test report 4EN28659:1990 BSI 01-2000 3 1 Scope This International Standard specifies the endurance test nec
19、essary to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of valves to withstand adverse conditions, in particular those of chemically agressive fluid media and/or environments, or excessive fluid vel
20、ocities and cavitation. This International Standard includes values of the parameters necessary for the proper performance of the endurance test, with the reservation that parameters may be different in particular product standards (see5.1). 2 Normative references The following standards contain pro
21、visions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the
22、possibility of applying the most recent editions of the standards listed below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO161-1:1978, Thermoplastics pipes for the transport of fluids Nominal outside diameters and nominal pressures Part1: Metric series.
23、ISO6708:1980, Pipe components Definition of nominal size. ISO7005-2:1988, Metallic flanges Part2: Cast iron flanges. ISO7005-3:1988, Metallic flanges Part3: Copper alloy and composite flanges. 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 nominal
24、 pressure (PN) an alphanumerical designation of pressure, used for reference purposes, which is related to the mechanical strength of the valve. Usually it corresponds to the pressure of water at20 C, inbars, for which the valve is designed (seealsoISO161-1) 3.2 closing torque torque required to clo
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
本资源只提供5页预览,全部文档请下载后查看!喜欢就下载吧,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BSEN286591992THERMOPLASTICSVALVESFATIGUESTRENGTHTESTMETHOD 塑性 塑料 阀门 疲劳强度 试验 方法 PDF

链接地址:http://www.mydoc123.com/p-574390.html