EN 1487-2014 en Building valves - Hydraulic safety groups - Tests and requirements《建筑阀门 液压安全组 试验和要求》.pdf

1、BSI Standards PublicationBS EN 1487:2014Building valves Hydraulicsafety groups Tests andrequirementsBS EN 1487:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1487:2014. It supersedes BS EN 1487:2000 which is withdrawn.The UK participation in its preparatio

2、n was entrusted to Technical Committee B/504, Water supply.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

3、 British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 80008 5ICS 91.140.60Compliance 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

4、July 2014.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 1487:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1487 July 2014 ICS 91.140.60 Supersedes EN 1487:2000English Version Building valves - Hydraulic safety groups - Tests and requirements Robinetterie

5、de btiment - Groupes de scurit hydraulique - Essais et exigences Gebudearmaturen - Hydraulische Sicherheitsgruppen - Prfungen und Anforderungen This European Standard was approved by CEN on 22 May 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the con

6、ditions 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exis

7、ts 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national sta

8、ndards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, S

9、lovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reser

10、ved worldwide for CEN national Members. Ref. No. EN 1487:2014 EBS EN 1487:2014EN 1487:2014 (E) 2 Contents Page Foreword 4 Introduction .6 1 Scope 7 2 Normative references 7 3 Terms and definitions .8 4 Materials and surface finishes 11 4.1 General . 11 4.2 Materials 11 4.3 Detection of residual stre

11、ss . 11 4.3.1 Test . 11 4.3.2 Test method (Procedure) . 11 4.3.3 Requirements 12 4.4 Outside visible surfaces 12 4.4.1 Surfaces without coatings . 12 4.4.2 Surfaces with coatings . 13 4.5 Corrosion resistance 13 4.5.1 Test method . 13 4.5.2 Requirements 13 4.6 Coating adherence 13 4.6.1 Test method

12、. 13 4.6.2 Requirements 14 4.7 Compatibility with the products used for disinfection of the networks 14 4.7.1 General . 14 4.7.2 Test method . 14 4.7.3 Requirements 14 5 Design and dimensional requirements 14 5.1 General guidance 14 5.2 Dimensional characteristics 15 5.2.1 End connections . 15 5.3 T

13、est port . 17 5.4 Pressure tapping. 17 5.5 Hydraulic safety valve outlet connection to air break to drain 18 5.6 Hydraulic safety valve discharge connection to drain device . 18 5.7 Exclusions . 18 5.8 Replacing of the safety valve 18 5.9 Check valve . 18 6 Apparatus 18 6.1 General . 18 6.2 Toleranc

14、es of parameters and accuracy of measure instruments 18 6.2.1 Tolerances on set parameters . 18 6.2.2 Accuracy of measuring instruments 19 6.2.3 Test media . 19 7 Hydraulic tests and requirements . 19 7.1 Flow rate test . 19 7.1.1 Procedure 19 7.1.2 Requirement 19 7.2 Tightness test 19 BS EN 1487:20

15、14EN 1487:2014 (E) 3 7.2.1 General . 19 7.2.2 Tightness test for the isolating valve at a pressure of 1,6 MPa (16 bar) . 19 7.2.3 Hydraulic safety group tightness test . 20 8 Mechanical tests and requirements 20 8.1 Mechanical strength 20 8.1.1 Pressure test of the body of the hydraulic safety group

16、 . 20 8.1.2 Bending test of the body and pull out test of the drainage of the hydraulic safety group 20 8.1.3 Torsional strength of the hydraulic safety groups body 22 8.1.4 Tensile strength of the captive rotating nuts . 23 8.2 Mechanical strength of the easing gear of the pressure safety valve . 2

17、3 8.2.1 Procedure . 23 8.2.2 Requirement . 23 9 Tests and requirements of the components of the hydraulic safety group 24 9.1 Isolating valve 24 9.1.1 General . 24 9.1.2 Test of manual operation 24 9.1.3 Endurance test . 24 9.1.4 Test for manual operation 24 9.2 Check valve 25 9.2.1 Verification of

18、the leaktightness between the groups body and the check valve at low pressure 25 9.2.2 Verification of the leaktightness between the groups body and the check valve under high pressure . 25 9.3 Pressure safety valve 25 9.3.1 Pressures . 25 9.3.2 Cold water pressure tests. 26 9.3.3 Steam test. 27 9.4

19、 Endurance test . 28 9.4.1 Procedure . 28 9.4.2 Requirement . 28 9.5 Easing gear (manual control device) . 29 9.5.1 Operation of the easing gear 29 9.5.2 Easing gear endurance test 29 9.6 Manual drainage device 29 9.6.1 General . 29 9.6.2 Flow rate test . 29 9.7 Air break to drain . 29 10 Resistance

20、 to thermal shocks 30 10.1 Test method . 30 10.2 Requirement . 30 11 Acoustic tests and requirements . 30 12 Classification . 31 13 Designation 31 14 Marking . 32 15 Technical documents and presentation at delivery . 32 Annex A (informative) Test sequences . 34 BS EN 1487:2014EN 1487:2014 (E) 4 Fore

21、word This document (EN 1487:2014) 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 an identical text or by endorsement, at the latest by Jan

22、uary 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such paten

23、t rights. This document supersedes EN 1487:2000. The main changes compared to EN 1487:2000 are as follows: a) the Scope has been modified to nominal sizes DN 15 to DN 25; b) Normative references were updated; c) Terms and definitions were changed; d) subclause 4.1 (general wording for materials) was

24、 modified; e) subclauses 4.3 (Detection of residual stress), 4.4 (Outside visible surfaces), 4.5 (Corrosion resistance), 4.6 (Coating adherence) and 4.7 (Compatibility with the products used for disinfection of the networks) were added; f) subclauses 5.2 (Dimensional characteristics), 5.3 (Test port

25、) and 5.4 (Pressure tapping) were modified; g) subclause 5.7 (Other threads) was deleted; h) subclauses 5.8 (Replacing of the safety valve) and 5.9 (Check valve) were added; i) Clause 6 (Apparatus) was added, thus renumbering of the following clauses was necessary; j) Clause 7 (Hydraulic tests and r

26、equirements) was modified; k) Clause 8 (Acoustic tests and requirements) was moved to Clause 11 and modified editorially; l) Clause 9 (Tests and requirements of the components of the hydraulic safety group) was modified; m) Clause 10 (Resistance to thermal shocks) was added; n) Clause 12 (Classifica

27、tion) was modified; o) Clause 13 (Designation) was modified editorially; p) Clause 15 (Technical documents, presentation at delivery) was added; q) informative Annex A was replaced by informative Annex A (Test sequences). BS EN 1487:2014EN 1487:2014 (E) 5 According to the CEN-CENELEC Internal Regula

28、tions, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Ita

29、ly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1487:2014EN 1487:2014 (E) 6 Introduction In respect of potential adverse effect on the quality of water intended for human co

30、nsumption, caused by the product covered by this standard: a) This standard provides no information as to whether the product may be used without restriction 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, exist

31、ing national regulations concerning the use and or the characteristics of this product remain in force. BS EN 1487:2014EN 1487:2014 (E) 7 1 Scope This European Standard specifies dimensions, materials and performance requirements (including methods of test) for hydraulic safety groups, of nominal si

32、zes from DN 15 to DN 25, having working pressures1)from 0,1 MPa (1 bar) to 0,7 MPa (7 bar). Hydraulic safety groups are intended for fitting to the potable water supply of storage water heaters, having a maximum storage temperature of 95C. Hydraulic safety groups limit the pressure in hot water heat

33、ers, prevent the backflow of water into the main circuit and prevent the discharged water to get into contact with the water in the water heater. Hydraulic safety groups do not control the temperature. They ensure the hydraulic safety of water heaters if the mechanical resistance of the water heater

34、 remains at least equal to the rating pressure. NOTE The use of the device specified in this European Standard does not override the need to use controls (e.g. thermostats and cut-outs) which act directly on the power sources of water heaters. 2 Normative references The following documents, in whole

35、 or in part, are normatively referenced in this 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. EN 248:2002, Sanitary tapware - General

36、specification for electrodeposited coatings of Ni-Cr EN 806-1, Specifications for installations inside buildings conveying water for human consumption - Part 1: General EN 806-2, Specification for installations inside buildings conveying water for human consumption - Part 2: Design EN 806-3, Specifi

37、cations for installations inside buildings conveying water for human consumption - Part 3: Pipe sizing - Simplified method EN 806-4, Specifications for installations inside buildings conveying water for human consumption - Part 4: Installation EN 806-5, Specifications for installations inside buildi

38、ngs conveying water for human consumption - Part 5: Operation and maintenance EN 1488, Building valves - Expansion groups - Tests and requirements EN 1567, Building valves - Water pressure reducing valves and combination water pressure reducing valves - Requirements and tests EN 1717:2000, Protectio

39、n against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow EN 10226-1, Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads - Dimensions, tolerances and de

40、signation EN 13959, Anti-pollution check valves - DN 6 to DN 250 inclusive family E, type A, B, C and D 1) All pressures are gauge unless otherwise stated. BS EN 1487:2014EN 1487:2014 (E) 8 EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, toler

41、ances and designation (ISO 228-1) EN ISO 3822-1, Acoustics - Laboratory tests on noise emission from appliances and equipment used in water supply installations - Part 1: Method of measurement (ISO 3822-1) EN ISO 3822-3, Acoustics - Laboratory tests on noise emission from appliances and equipment us

42、ed in water supply installations - Part 3: Mounting and operating conditions for in-line valves and appliances (ISO 3822-3) EN ISO 4628-3, Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - P

43、art 3: Assessment of degree of rusting (ISO 4628-3) EN ISO 6509, Corrosion of metals and alloys - Determination of dezincification resistance of brass (ISO 6509) ISO 6957, Copper alloys Ammonia test for stress corrosion resistance 3 Terms and definitions For the purposes of this document, the follow

44、ing terms and definitions apply. 3.1 hydraulic safety group safety device that limits the pressure in hot water heaters, prevents the backflow of water into the main circuit, prevents the discharged water from coming into contact with the water in the water heater, allows the function of the backflo

45、w prevention to be controlled and isolates and drains the water heater for maintenance services Note 1 to entry: A hydraulic safety group is comprised of at least the following items in a single unit, in an upstream to downstream order, as shown in Table 1. Table 1 Components of hydraulic safety gro

46、ups DN 15 DN 20 DN 25 isolating valve 1 1 1 test port for monitoring the check valve 1 1 1 check valve 1 1 1 isolating valve 1a1a1aadditional outlet connection 1a1a1apressure safety valve 1 1 1 drain device or drain function 1 1 1 air break to drain 1 1 1 pressure tapping 1a1a1aaOptional. 3.2 isolat

47、ing valve valve that allows the water heater to be isolated from the potable water supply Note 1 to entry: If a second valve is fitted, it is placed between the check valve and safety valve. BS EN 1487:2014EN 1487:2014 (E) 9 3.3 check valve valve that allows water to flow into a water heater, and au

48、tomatically prevents water returning to the water supply 3.4 additional outlet connection outlet connection that allows cold potable water to be supplied to an additional device Note 1 to entry: For example, inline hot water supply tempering valves etc. 3.5 pressure safety valve valve that limits th

49、e pressure of the water in the water heater to a predetermined value by discharging water to the drain and in case of temperature control failure, discharging the energy stored as water or steam 3.6 drain device or drain function device that allows the water heater to be drained without removing the hydraulic safety group and the outlet connection which is also used to discharge water or steam from the pressure safety valve 3.7 air break to drain air break that prevents discharged water from returning to the hydraulic safety group and thus to the water heater 3.8 pr