阀门标准-BS EN 736-1-1995(天选打工人).pdf

3404589 O086976 898 BRITISH STANDARD Valves-BS EN Terminology Part 1.Definition of types of valves The European Standard EN 736-1:1995 has the status of a British Standard 736-1:1995 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3404589 O086977 724 M BS EN 736-1:1995 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Echnical Committee PSE/7,Valves,upon which the following bodies were represented:Amalgamated Engineering Union Association of Bronze and Brass Founders British Chemical Engineering Contractors Association British Foundry Association British Gas plc British Plumbing Fittings Manufacturers Association British Valve and Actuator Manufacturers Association British Water Chartered Institution of Building Services Engineers Electricity Association Energy Industries Council Engineering Equipment and Materiais Users Association GAMBICA(BEAMA Ltd.)Health and Safety Executive Institution of Mechanical Engineers LP Gas Association Ministry of Defence Pipe Line Industries Guild Society of British Water Industries Water Services Association of England and Wales West Midlands CBI Coopted members This British Standard,having been prepared under the direction of the Engineering Sector Board,was published under the authority of the Standards Board and comes into effect on 15 July 1995 0 BSI 1995 Amendments issued since publication Amd.No.I Date I Ext affected The following BSI references relate to the work on this standard:Committee reference PSE/7 Draft for comment 92/76141 DC ISBN O 580 24276 5 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-m 3404589 0086978 660=_ BS EN 736-1:1995 Contents m!e Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 736-1 3 i Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3404589 0086979 5T BS EN 736-1:1995 National foreword This British Standard has been prepared by kchnical Committee PSE/7 and is the English language version of EN 736-1:1995 Vulves-i n o l o g y Part 1:Definition o f types of vulves,published by the European Committee for Standardization(CEN).EN 736-1 was produced as a result of international discussions in which the United Kingdom took an active part.Compliance with a British Standard does not of itself confer immunity from legal obligations.ii Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3404589 0086980 217=EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 736-1 February 1995 ICs 01.040.23;23.060.00 Descriptors:valves and fittings,vocabulary,classifications,designations English version Valves-Terminology Part 1:Definition of types of valves Appareils de robinetterie-Terminologie-Partie 1:Dfinition des types dappareil Armaturen-Terminologie-Teil 1:Definition der Grundbauarten This European Standard was approved by CEN on 1995-02-01.CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.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 translation 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,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 O 1995 Copyright reserved to CEN members Ref.No.EN 736-1:1995 E Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3404589 008bBII II55=Page 2 EN 7361:1995 Foreword Contents This European Standard has been prepared by the%chnical Committee CEN/TC 69,Industrial valves,the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard,either by publication of an 3 Definition 2 Normative reference identical text or by endorsement,at the latest by August 1995,and conflicting national standards shall be withdrawn at the latest by August 1995.vpes of related to design Types of valves related to function 5 According to the CENKENELEC Internal Regulations,the following countries are bound to implement this European Standard:Austria,Belgium,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,Switzerland,United Kingdom.m3e 3 3 3 3 6 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3404589 0086982 091=Page 3 EN 736-1:1995 1 Scope This standard gives the denominations of valves.It has the purpose to provide a uniform and systematic terminology for all types of valves.By reasons of classification of terms,clause 4 defines terms related to basic design characteristics and clause 5 defines terms related to functional characteristics of valves.2 Normative reference This European Standard incorporates by dated or undated reference,provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listed hereafter.For dated references,subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision.For undated references the latest edition of the publication referred to applies.EN 736-2 Valves-lkmi?zology-Part 2:Definition of components o f valves 4.1.3 Plug and ball valves Valve in which the obturator rotates about an axis at right angle to the direction of flow and,in the open position,the flow passes through the obturator.4.1.4 Buttewu valve and eccentric plug valve Valve in which the obturator rotates about an axis at right angle to the direction of flow and,in the open position,the flow passes around the obturator.NTE.This definition also applies to swing check valves.4.1.5 Diaphragm valve Valve in which the fluid flow passage through the valve is changed by deformation of a flexible obturator.NOTE.This definition also applies to diaphragm check valves.4.2 Examples of basic types The schematic figures given below show typical designs of valves.Details of different body patterns and obturator designs are given in EN 736-2.4.2.1 Gate valve 3 Definition For the purposes of this standard,the following definition applies:3.1 valve Piping component which influences the fluid flow by opening,closing or partially obstructing the passage of the fluid flow or by diverting or mixing the fluid flow.4 mpes of valves related to design 4.1 Basic types lhble 1 shows the basic types of valves.They are distinguished by:a)the operating motion of the obturator;b)the direction of flow in the seating area.4.1.1 Gate valve Valve in which the obturator movement is linear and,in the seating area,at right angle to the direction of flow.4.1.2 Globe valve Valve in which the obturator movement is linear and,in the seating area,in the direction of flow.NCrrE.This definition also applies to lift check valves and axial check valves.Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3404589 008b983 T28 Page 4 EN 736-1:1995 B C 3 U 3 3 U U O E;9 3 4 2 O tl Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3Y04589 008698q 964 Page 5 EN 736-1:1995 4.2.2 Globe valve Globe valve Lift check valve Axial check valve 4.2.3 Plug and ball ualve Plug valve Ball valve Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3404587 0086785 8 T O =Page 6 EN 736-1:1995 4.2.4 ButteMg valve and eccentric plug valve h Butterfly valve-Swing check valve-Eccentric plug valve-2.5 Diaphragm valve h Diaphragm valve I Diaphragm check valve 5&pes of valves related to function 5.1 Isolating valve Valve intended for use only in the closed or fully open position.5.2 Regulating valve Valve intended for use in any position between closed and fully open.5.3 Control valve A power operated device which changes the fluid flow rate in process control system.It consists of a valve connected to an actuator with or without positioner that is capable of changing the position of an obturator in the valve in response to a signal from the controlling system.5.4 Safety valve Valve which automatically,without the assistance of any energy other than that of the fluid concerned,discharges a certified quantity of the fluid so as to prevent a predetermined safe pressure being exceeded,and which is designed to reclose and prevent further flow of fluid after normal pressure conditions of service have been restored.5.5 Bursting disc safety device A non-reclosing pressure relief device actuated by differential pressure and designed to function by the bursting of the bursting disc(s).It is the complete assembly of installed components including,where appropriate,the bursting disc holder.5.6 Check valve Valve which automatically opens by fluid flow in a defined direction and which automatically closes to prevent fluid flow in the reverse direction.NUE.Definitions of types of check valves are given in clauses 4.1.2,4.1.4and4.1.6.5.7 Diverting valve Valve intended to influence the proportion of two or more output flows from a common input flow by changing the position of the obturator.5.8 Mixing valve Valve intended to influence the proportion of two or more input flows to produce a common output flow by changing the position of the obturator.5.9 Automatic steam trap Self-contained valve which automatically drains the condensate from a steam-containing enclosure whilst remaining tight to live steam or,if necessary,allowing steam to flow at a predetermined rate.Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-m 3404589 O086986 737 m BS EN 73&1:1995 BSI 389 Chiswick High Road London W4 4AL 9507-5-0.35k-FP BSI-British Standards Institution BSI is the independent national body responsible for preparing British Standards.It presents the UK view on standards in Europe and at the international level.It is incorporated by Royal Charter.Contract requirements A British Standard does not purport to include all the necessary provisions of a contract.Users of British Standards are responsible for their correct application.Revisions British Standards are updated by amendment or revision.Users of British Standards should make sure that they possess the latest amendments or editions.Any person who finds an inaccuracy or ambiguity while using this British Standard should bring it to the attention of the Quality Manager,BSI without delay so that the matter 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