1、November 2015 English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.060.30!%GFI“2363538www.din.d
2、eDIN EN 1171Industrial valves Cast iron gate valves;English version EN 1171:2015,English translation of DIN EN 1171:2015-11Industriearmaturen Schieber aus Gusseisen;Englische Fassung EN 1171:2015,Englische bersetzung von DIN EN 1171:2015-11Robinetterie industrielle Robinets-vannes en fonte;Version a
3、nglaise EN 1171:2015,Traduction anglaise de DIN EN 1171:2015-11SupersedesDIN EN 1171:2003-01www.beuth.deDocument comprises 21 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.10.15DIN EN 1171:2015-11 2 A comma is used as the dec
4、imal marker. National foreword This document (EN 1171:2015) has been prepared by Technical Committee CEN/TC 69 “Industrial valves” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the DIN-Normenausschuss Armaturen (DIN Standards Committee Valves), Working Com
5、mittee NA 003-01-02 AA Schieber. Amendments This standard differs from DIN EN 1171:2003-01 as follows: a) normative references in Clause 2 and throughout the text have been updated; b) Subclauses 4.1.1, 4.1.2.1, 4.1.2.3, 4.2.1, 8.1, Annex C and Table ZA.1 have been revised to bring them into line wi
6、th EU Directive 97/23/EC. Previous editions DIN 3204: 1928-04, 1942xxx-10 DIN 3205: 1928-04, 1931-04 DIN 3206: 1928-04, 1931-04 DIN 3208: 1928-04 DIN 3216: 1942x-10 DIN 3218: 1942-11, 1943x-10 DIN 3225: 1942xx-10 DIN 3226: 1942-10 DIN 3352-2: 1979-05, 1986-08, 1988-08 DIN 3352-3: 1979-05, 1980-11, 1
7、986-08, 1988-08 DIN 3352-4: 1980-10, 1986-01 DIN 3352-13: 1987-10 DIN EN 1171: 2003-01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1171 September 2015 ICS 23.060.30 Supersedes EN 1171:2002English Version Industrial valves - Cast iron gate valves Robinetterie industrielle - Robinets-vannes e
8、n fonte Industriearmaturen - Schieber aus Gusseisen This European Standard was approved by CEN on 1 August 2015. 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 al
9、teration. 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 exists in three official versions (English, French, German). A version in any other language m
10、ade 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 standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Est
11、onia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STA
12、NDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1171:2015 EEN 1171:2015 (E) 2 Contents
13、 Page European foreword 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions 5 4 Requirements 5 4.1 Design . 5 4.1.1 Materials 5 4.1.2 Pressure/temperature ratings 6 4.1.3 Dimensions . 7 4.1.4 Operation 9 4.2 Functional characteristics 11 4.2.1 Shell design strength 11 4.2.2 Flow charact
14、eristics . 12 4.2.3 Seat tightness 12 4.2.4 Sizing the operating element 12 4.3 Strength torque 12 5 Test procedures . 13 6 Declaration of compliance . 13 7 Designation 13 8 Marking, preparation for storage and transportation 14 8.1 Marking . 14 8.2 Preparation for storage and transportation . 14 An
15、nex A (informative) Information to be supplied by the customer 15 Annex B (normative) Strength torque test. 16 Annex C (normative) Equivalence between EN and ISO cast iron material grades 17 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Direc
16、tive 97/23/EC 18 Bibliography 19 DIN EN 1171:2015-11 EN 1171:2015 (E) 3 European foreword This document (EN 1171:2015) has been prepared by Technical 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 sta
17、ndard, either by publication of an identical text or by endorsement, at the latest by March 2016, and conflicting national standards shall be withdrawn at the latest by March 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. C
18、EN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1171:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements o
19、f EU Directive 97/23/EC (PED). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. In this new edition, the following modifications were made: the normative references were updated in Clause 2 and throughout the text; 4.1.1, 4.1.2.1, 4.1.2.3,
20、4.2.1, 8.1, Annex C and Table ZA.1 were revised to be in compliance with EU Directive 97/23/EC (PED). According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
21、 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, Slovenia, Spain, Sweden, Switzerland, Turkey and the U
22、nited Kingdom. DIN EN 1171:2015-11 EN 1171:2015 (E) 4 1 Scope This European Standard specifies the requirements for cast iron gate valves with flanged ends, socket ends or spigot ends. This European Standard is applicable to cast iron gate valves mainly used for industrial and general-purpose applic
23、ations. However, they can be used for other applications provided the requirements of the relevant performance standards are met. The range of nominal sizes covered is: DN 40 ; DN 50 ; DN 65 ; DN 80 ; DN 100 ; DN 125 ; DN 150 ; DN 200 ; DN 250 ; DN 300 ; DN 350 ; DN 400 ; DN 450 ; DN 500 ; DN 600 ;
24、DN 700 ; DN 800 ; DN 900 ; DN 1 000. The range of pressure designations covered is: isobaric PN 6; PN 10; PN 16; PN 25; isomorphic, PS 10 bar to PS 1 bar at room temperature. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indi
25、spensable 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 19:2002, Industrial valves Marking of metallic valves EN 545:2010, Ductile iron pipes, fittings, accessori
26、es and their joints for water pipelines Requirements and test methods EN 558, Industrial valves Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems PN and Class designated valves EN 736-1, Valves Terminology Part 1: Definition of types of valves EN 736-2, Valve
27、s Terminology Part 2: Definition of components of valves EN 736-3, Valves Terminology Part 3: Definition of terms EN 1092-2:1997, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 2: Cast iron flanges EN 12266-1, Industrial valves Testing of me
28、tallic valves Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements EN 12266-2, Industrial valves Testing of metallic valves Part 2: Tests, test procedures and acceptance criteria - Supplementary requirements EN 12351, Industrial valves Protective caps for valves w
29、ith flanged connections EN 12516-3:2002, Valves Shell design strength Part 3: Experimental method EN 12516-4:2014, Industrial valves Shell design strength Part 4: Calculation method for valve shells manufactured in metallic materials other than steel DIN EN 1171:2015-11 EN 1171:2015 (E) 5 EN 12570,
30、Industrial valves Method for sizing the operating element EN ISO 5210, Industrial valves Multi-turn valve actuator attachments (ISO 5210) ISO 185:2005, Grey cast irons Classification ISO 1083:2004, Spheroidal graphite cast irons Classification ISO 2531:2009, Ductile iron pipes, fittings, accessories
31、 and their joints for water applications ISO 5922:2005, Malleable cast iron 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 736-1, EN 736-2 and EN 736-3 and the following apply. NOTE The terms maximum allowable pressure, PS, and test pressure, PT, def
32、ined in EU Directive 97/23/EC (PED) are equivalent to the terms allowable pressure, ps, and test pressure, pt, defined in EN 7363. 3.1 isomorphic series series of cast iron gate valves of a specified type and design having maximum allowable pressures which tend to decrease as the nominal size increa
33、ses (see Table 2) and having specific flanged end connections (see 4.1.3.2.1) 3.2 isobaric series series of cast iron gate valves of a specified type and design having the same maximum allowable pressure for all nominal sizes 3.3 strength torque torque applied directly to the operating mechanism or,
34、 when fitted, the operating device, which the valve is capable of withstanding 4 Requirements 4.1 Design 4.1.1 Materials 4.1.1.1 The body and bonnet materials shall be selected from Table 1 and designed in accordance with EN 12516-4:2014. NOTE Materials listed in Table 1 comply with the requirements
35、 of EN 1561 for grey cast iron, EN 1562 for malleable cast iron and EN 1563 for spheroidal graphite cast iron. DIN EN 1171:2015-11 EN 1171:2015 (E) 6 Table 1 Body and bonnet materials Graphite structure European Standard Designation short name Grey cast iron EN 125164:2014 EN-GJL-200 EN 125164:2014
36、EN-GJL-250 Spheroidal graphite cast iron EN 125164:2014 EN-GJS-350-22-LT EN 125164:2014 EN-GJS-35022-RT EN 125164:2014 EN-GJS-40018-LT EN 125164:2014 EN-GJS-40018-RT EN 125164:2014 EN-GJS-40015 EN 125164:2014 EN-GJS-5007 EN 125164:2014 EN-GJS-6003 Malleable cast iron EN 125164:2014 EN-GJMB-3006 EN 1
37、25164:2014 EN-GJMB-35010 4.1.1.2 The body and bonnet materials may also be spheroidal graphite cast iron in accordance with the requirements of EN 545:2010, 4.4. 4.1.1.3 All the internal parts in contact with the fluid shall be made of a material whose corrosion resistance to the fluid being carried
38、 is at least equal to the body and bonnet material. 4.1.1.4 Trim materials shall have a chemical composition and mechanical properties, which ensure the mechanical integrity of the valve and shall be stated in the manufacturers technical documentation. The trim comprises the following: a) stem; b) o
39、bturator seat; c) body seat; d) back seat (for valves DN 50 and above, when fitted). 4.1.1.5 Welding and impregnation of castings of all materials are not permitted. 4.1.2 Pressure/temperature ratings 4.1.2.1 Isobaric series The pressure/temperature ratings shall be in accordance with EN 1092-2:1997
40、 for the equivalent ISO material grade except that valves with metallic seats shall not be used above 230 C and valves with soft seats shall not be used above 70 C. To determine the equivalent ISO material grades for the EN material grades specified in Table 1, refer to Annex C. 4.1.2.2 Isomorphic s
41、eries The pressure/temperature ratings shall be as given in Table 2. DIN EN 1171:2015-11 EN 1171:2015 (E) 7 Table 2 Pressure/temperature ratings for isomorphic series DN Maximum allowable pressure PS (bar) at 10 C/120 C 150 C 180 C 200 C 230 C 40 to 80 10,0 9,0 8,4 8,0 7,4 100 125 150 200 250 6,0 5,
42、4 5,0 4,8 4,4 300 350 4,0 3,6 3,4 3,2 3,0 400 450 500 600 2,5 2,3 2,1 2,0 1,9 700 800 1,6 1,4 1,3 1,3 1,2 900 1,0 0,9 0,8 0,8 0,7 1 000 4.1.2.3 For TS - 10 C, the body and bonnet material grades shall be EN-GJS-350-22-LT or EN-GJS-400-18-LT. In this case, the TS minimum shall be not less than the te
43、mperature specified in EN 12516-4:2014, Table 7. 4.1.3 Dimensions 4.1.3.1 Face-to-face and end-to-end dimensions The face-to-face dimensions of flanged valves shall be in accordance with the basic series given in Table 3. Table 3 Basic series of face-to-face dimensions Series DN Basic series (accord
44、ing to EN 558) Isomorphic 40 to 1 000 14 PN 6, PN 10, PN 16 40 to 500 14 40 to 1 000 3, 15, 29, 30 PN 25 40 to 600 19, 4, 15, 26 40 to 400 45 The end-to-end dimensions of valves with socket or spigot ends are given in the manufacturers technical documentation. DIN EN 1171:2015-11 EN 1171:2015 (E) 8
45、4.1.3.2 Body ends 4.1.3.2.1 General The manufacturers technical documentation shall indicate the type and dimensions of valve body ends, and reference to the relevant European Standard. 4.1.3.2.2 Flange end connections Flanges shall be in accordance with EN 1092-2. Flanges can be an integral part of
46、 the valve body or adjustable flanges on a collar. Flanges, which are an integral part of the body, may have supports, which permit a stable installation of the valve. For isomorphic gate valves, the flange facing and mating dimensions shall be PN 10. 4.1.3.2.3 Spigot end connections Spigot ends sha
47、ll be compatible with the adjacent piping. 4.1.3.2.4 Socket end connections The socket ends shall be compatible with the adjacent piping. They may have a seal housing with clearance to allow angular displacement after assembly. 4.1.3.3 Body end port inside diameter The body end port shall be circula
48、r. For unlined valves, the body end port inside diameter shall be not less than the nominal inside diameter specified in Table 4. For isomorphic gate valves the dimensions for PN 10 shall be used. DIN EN 1171:2015-11 EN 1171:2015 (E) 9 Table 4 Nominal inside diameter of the body end port Dimensions
49、in millimetres DN PN 6, PN 10 PN 16 PN 25 40 40 40 38 50 50 50 50 65 63 63 63 80 78 78 76 100 100 100 100 125 125 125 125 150 150 150 150 200 200 200 200 250 250 250 250 300 300 300 300 350 343 343 336 400 394 394 387 450 445 445 438 500 495 495 488 600 597 597 590 700 695 695 692 800 800 793 788 900 900 889 889 1 000 1 000 991 991 4.1.4 Operation 4.1.4.1 Maximum height The maximum height of gate valves without gearbox, actuator or position indicator (see Figure 1), sh
