阀门标准-BS EN 1489-2000 建筑物阀门.压力安全阀门.试验和要求(天选打工人).pdf
|BRITISH STANDARDBS EN1489:2000The European Standard EN 1489:2000 has the status of aBritish StandardICS 91.140.60NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBuilding valves Pressure safetyvalves Tests andrequirementsCopyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This British Standard,havingbeen prepared under thedirection of the SectorCommittee for Building and CivilEngineering,was published underthe authority of the StandardsCommittee and comes into effecton 15 October 2000 BSI 10-2000ISBN 0 580 36461 5BS EN 1489:2000Amendments issued since publicationAmd.No.DateCommentsNational forewordThis British Standard is the official English language version of EN 1489:2000.The UK participation in its preparation was entrusted by Technical CommitteeB/504,Water supply,to Subcommittee B/504/7,Control and safety devices indrinking water systems,which has the responsibility to:aid enquirers to understand the text;present to the responsible European committee any enquiries on theinterpretation,or proposals for change,and keep the UK interests informed;monitor related international and European developments and promulgatethem in the UK.A list of organizations represented on this subcommittee can be obtained on requestto its secretary.Cross-referencesThe British Standards which implement international or European publicationsreferred to in this document may be found in the BSI Standards Catalogue under thesection entitled International Standards Correspondence Index,or by using theFind facility of the BSI Standards Electronic Catalogue.A British Standard does not purport to include all the necessary provisions of acontract.Users of British Standards are responsible for their correct application.Compliance with a British Standard does not of itself confer immunityfrom legal obligations.Summary of pagesThis document comprises a front cover,an inside front cover,the EN title page,pages 2 to 17 and a back cover.The BSI copyright notice displayed in this document indicates when the documentwas last issued.Copyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1489March 2000ICS 91.140.60English versionBuilding valves-Pressure safety valves-Tests andrequirementsRobinetterie de btiment-Soupapes de scurit-Essais etprescriptionsGebudearmaturen-Sicherheitsventile-Prfungen undAnforderungenThis European Standard was approved by CEN on 3 February 2000.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCentral Secretariat:rue de Stassart,36 B-1050 Brussels 2000 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref.No.EN 1489:2000 ECopyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 2EN 1489:2000 BSI 10-2000CONTENTSPageForeword3Introduction31Scope42Normative references43Definitions44Materials and surface finishes55Design and dimensional requirements66Hydraulic tests and requirements77Mechanical tests and requirements128Acoustic tests and requirements149Classification1410Designation1411Marking14ANNEX A(INFORMATIVE)16Copyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w w w.b z f x w.c o mPage 3EN 1489:2000 BSI 10-2000FOREWORDThis European Standard has been prepared by Technical Committee CEN/TC 164 Water supply,the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard,either by publication of anidentical text or by endorsement,at the latest by September 2000,and conflicting national standardsshall be withdrawn at the latest by September 2000.According to the CEN/CENELEC Internal Regulations,the national standards organizations of thefollowing countries are bound to implement this European Standard:Austria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,Switzerland and the United Kingdom.Annex A of this European Standard is informative.INTRODUCTIONIn respect of potential adverse effect on the quality of water intended for human consumption,caused by the product covered by this standard:a)This standard provides no information as to whether the product may be used withoutrestriction in any of the Member States of the EU or EFTA.b)It should be noted that,whilst awaiting the adoption of verifiable European criteria,existing national regulations concerning the use and/or the characteristics of this productremain in force.Copyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w w w.b z f x w.c o mPage 4EN 1489:2000 BSI 10-20001 SCOPEThis European Standard specifies dimensions,materials and performance requirements(includingmethods of test)for pressure safety valves,of nominal sizes from DN 15 to DN 40,having workingpressures1)from 0,1 MPa(l bar)to 1,0 MPa(10 bar).Pressure safety valves are intended for fitting to the cold water supply of storage water heaters,having a maximum distribution temperature of 95 C,for all energy sources.Pressure safety valves do not control the temperature and alone do not constitute the protectionrequired for storage water heaters.They are not intended to act as expansion valves under normalconditions.NOTE:The use of the device specified in this standard does not override the need to usecontrols(e.g.thermostats and cut-outs)which act directly on the power sources of waterheaters.2 NORMATIVE REFERENCESThis European Standard incorporates,by dated or undated reference,provisions from otherpublications.These normative references are cited at the appropriate places in the text and thepublications are listed hereafter.For dated references,subsequent amendments to or revisions of anyof these publications apply to this European Standard only when incorporated in it by amendment orrevision.For undated references the latest addition of the publication referred to applies.EN 1254-2Copper and copper alloys-Plumbing fittings-Part 2:Fittings withcompression ends for use with copper tubes.EN 1982Copper and copper alloys-Ingots and castings.EN 12420Copper and copper alloys-Forgings.EN ISO 6509Corrosion of metals and alloys-Determination of dezincification resistanceof brass(ISO 6509:1981).ISO 7-1:1994Pipe threads where pressure-tight joints are made on the threads-Part 1:Dimensions,tolerances and designation.ISO 228-1:1994Pipe threads where pressure-tight joints are not made on the thread-Part 1:Dimensions,tolerances and designation.ISO 7005-3:1988Metallic flanges-Part 3:Copper alloy and composite flanges.3 DEFINITIONSFor the purposes of this standard the following definitions apply:3.1 pressure safety valve limits the pressure of the water in the water heater to a predeterminedvalue by discharging water to drain.In case of temperature control failure,it will discharge theenergy stored in the water as steam.3.2 nominal set pressure(Pnr)is the pressure of the pressure safety valve which is set onproduction.3.3 water-tightness pressure(Pe)is the pressure up to which the pressure safety valve is closed.1)All pressures are gauge unless otherwise stated.Copyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w w w.b z f x w.c o mPage 5EN 1489:2000 BSI 10-20003.4 initial opening pressure(Pdc):a)Pdc water is the pressure at which the pressure safety valve opens for the first time,asindicated by the first droplet of water,after a period of storage.b)Pdc steam is the pressure at which the pressure safety valve opens for the first time,asindicated by the first appearance of steam at the discharge connection,after a period ofstorage(see figure 1).3.5 opening pressure(Po):a)Po water is the pressure at which a flow rate of 2,4 litres/hour of water is attained throughthe pressure safety valve(see figure 1).b)Po steam is the pressure at which the pressure safety valve opens as indicated by theappearance of steam at the discharge connection of the pressure safety valve(see figure 1).3.6 rating pressure(Pdn)is the pressure at which the water discharge capacity of the pressuresafety valve corresponds to the rated flow(see figure 1).3.7 closing pressure(Pf)is the pressure at which the pressure safety valve closes after havingreached the rating pressure(see figure 1).Key1)Pressure2)TimeFigure 1-Pressures-see Section 3 Definitions4 MATERIALS AND SURFACE FINISHES4.1 GeneralThe selection of materials is the responsibility of the manufacturer,provided they satisfy thefollowing requirements:a)materials and coatings shall not contaminate the drinking water,when in normal oraccidental contact,Copyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w w w.b z f x w.c o mPage 6EN 1489:2000 BSI 10-2000b)in a technical document,the manufacturer shall state the nature of the materials andcoatings used,c)materials with inadequate corrosion resistance shall have additional protection,andd)the materials used shall not deteriorate at a temperature of 95 C for 1 hour and besuitable under the temperatures specified in the tests in this standard.4.2 Nature of materialsExamples of bronze and brass which may be used,without coating,for manufacturing purposes aregiven in table 1.Table 1-Examples of copper alloysMaterial DesignationSymbolReference NumberEN StandardCu Sn 5 Pb 5 Zn 5-CCC491KEN 1982Cu Sn 3 Zn 8 Pb 5-CCC490KEN 1982Cu Zn 39 Pb 3CW614NEN 12420Cu Zn 40 Pb 2CW617NEN 12420Cu Zn 36 Pb 2 AsCZ132-Copper-zinc alloys containing more than 10%zinc are subject to dezincification when submitted towater capable of dezincification.In the countries where the use of products made of dezincificationresistant materials is required,the products have to guarantee a dezincification depth less than200 m in any direction,they have to be tested in accordance with the standard EN ISO 6509 andhave to be marked in compliance with the indications under section MARKING(point 11).5 DESIGN AND DIMENSIONAL REQUIREMENTS5.1 General guidancea)The pressure safety valve shall be of the type where the spring is isolated from the waterby a diaphragm or equivalent.b)All sliding elements shall be designed to prevent any risk of seizure,scaling or sticking.c)Sliding or rotating parts of the pressure safety valve shall not be in contact with water.d)The components controlling the setting of the pressure safety valve shall not be accessibleto the end user without damage to the valve.e)The pressure safety valve shall be designed so as to make the opening pressure no greaterthan 1,3 Pnr,and under this pressure,manual lift of the pressure safety valve shall be inconformity with the requirements of the tests given in section 6.5.1.f)Wing or similar guides of the pressure safety valve shall not be used on the inlet side ofthe pressure safety valve.g)The normal operation of the pressure safety valve shall not be influenced by externalforces.h)The body of the pressure safety valve shall have two suitable flats to apply a spanner.i)If there is only one direction for operation of rotary controls of a pressure safety valve itshall be anticlockwise.Copyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w w w.b z f x w.c o mPage 7EN 1489:2000 BSI 10-20005.2 PressuresGeneral:For set pressures below 0,3 MPa(3 bar)the same differential pressures shall be used as for0,3 MPa(3 bar).EXAMPLE:a pressure safety valve with a set pressure of 0,2 MPa(2 bar)shall have a ratingpressure of Pdn equal to 0,23 MPa(2,3 bar),see figure 1.5.2.1 Nominal set pressure(Pnr)The nominal set pressure shall not be greater than 1,0 MPa(10 bar).5.2.2 Water tightness pressure(Pc)The water tightness pressure is related to the nominal set pressure(Pnr)by:Pe minimum=0,95 Pnr5.2.3 Opening pressure(Po)The opening pressure is related to the nominal set pressure(Pnr)by:Po=1,1 Pnr5.2.4 Rating pressure(Pdn)The rating pressure is related to the nominal set pressure(Pnr)by:Pdn=1,2 Pnr5.2.5 Closing pressure(Pf)The closing pressure is related to the nominal set pressure(Pnr)by:Pf minimum=0,75 Pnr5.3 Dimensional characteristicsThe nominal outlet diameter of the pressure safety valve shall be at least equal to the inletdimension.5.3.1 End connectionsExamples of end connections are given in table 2.5.3.2 Other connections(e.g.unions)Connections,other than those specified in section 5.3.1,shall be tested in accordance withsection 7.2.3.5.3.3 ExclusionsConnections requiring the use of heat to make or break the joint (e.g.capillary)are not permitted.6 HYDRAULIC TESTS AND REQUIREMENTS6.1 TolerancesUnless otherwise specified,all tolerances shall be 5%.Copyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w w w.b z f x w.c o mPage 8EN 1489:2000 BSI 10-2000Table 2-Examples of end connections and nominal sizes(DN)Type1)DN 15DN 20DN 25DN 32DN 40a)Internal thread to ISO 7-1:1994dRp Rp Rp 1Rp 1 Rp 1 b)External taper thread to ISO 7-1:1994dR R R 1R 1 R 1 c)Flat faced external thread toISO 228-1:1994dG BG 1 BG 1 BG 1 BG 1 Bd)External thread with shoulder toISO 228-1:1994dG BG BG 1 BG 1 BG 1 Be)Compression fitting for copper pipeto EN 1254-2d15/1822283542f)Flange to ISO 7005-3:1988DdK9575141050750141150850141401000181501100181)reference dimensionCopyright British Standards Institution Provided by IHS under license with BSINot for ResaleNo reproduction or networking permitted witho
