Industrial valves - Cast iron gate valves

This European Standard specifies the requirements for cast iron gate valves with flanged ends, socket ends or spigot ends.
This standard is applicable to cast iron gate valves mainly used for industrial and general-purpose applications. 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 ; 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.

Industriearmaturen - Schieber aus Gusseisen

Diese Europäische Norm legt die Anforderungen an Schieber aus Gusseisen mit Flanschenden, Muffenenden oder Spitzenden fest.
Diese Europäische Norm ist anwendbar auf Schieber aus Gusseisen, die vorwiegend für industrielle und allgemeine Anwendungen verwendet werden. Sie können jedoch auch für andere Anwendungen verwendet werden, unter der Voraussetzung, dass die Anforderungen der zugehörigen Gebrauchstauglichkeitsnormen erfüllt sind.
Der Nennweitenbereich ist wie folgt festgelegt:
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; DN 700; DN 800; DN 900; DN 1 000.
Der Bereich der Druckbezeichnungen ist wie folgt festgelegt:
-   isobar: PN 6; PN 10; PN 16; PN 25;
-   isomorph: PS 10 bar bis PS 1 bar, bei Raumtemperatur.

Robinetterie industrielle - Robinets-vannes en fonte

La présente Norme Européenne spécifie les prescriptions applicables aux robinets-vannes en fonte à extrémité à brides, à extrémités à emboîter femelle ou mâle.
La présente Norme Européenne s'applique aux robinets-vannes en fonte utilisés principalement pour des applications industrielles et d'usage général. Cependant ils peuvent être utilisés pour d'autres applications pourvu que les spécifications des normes appropriées de performances soient respectées.
La gamme de dimensions nominales couverte est :
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 ; DN 700 ; DN 800 ; DN 900 ; DN 1 000.
La gamme des désignations de pression couverte est :
-   isobares PN 6; PN 10; PN 16; PN 25;
-   isomorphes, PS 10 bar à PS 1 bar à la température ambiante.

Industrijski ventili - Litoželezni zasuni

Ta evropski standard določa zahteve za litoželezne zasune s prirobničnimi, vtičnimi ali spojnimi zaključki.
Ta standard velja za litoželezne zasune, ki se uporabljajo predvsem za industrijsko in splošno uporabo. Vendar se lahko uporabljajo za druge namene, če so izpolnjene zahteve ustreznih standardov zmogljivosti.
Razpon nazivnih velikosti je:
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; DN 700; DN 800; DN 900; DN 1 000.
Razpon zajetih oznak tlaka je:
– izobarne PN 6; PN 10; PN 16; PN 25;
– izomorfne, PS 10 bar do PS 1 bar pri sobni temperaturi.

General Information

Status
Published
Publication Date
01-Sep-2015
Technical Committee
Current Stage
9093 - Decision to confirm - Review Enquiry
Due Date
04-Mar-2021
Completion Date
08-Jun-2021

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Industrijski ventili - Litoželezni zasuniIndustriearmaturen - Schieber aus GusseisenRobinetterie industrielle - Robinets-vannes en fonteIndustrial valves - Cast iron gate valves23.060.30Zapirni ventili (zasuni)Gate valvesICS:Ta slovenski standard je istoveten z:EN 1171:2015SIST EN 1171:2015en,fr,de01-november-2015SIST EN 1171:2015SLOVENSKI

STANDARDSIST EN 1171:20031DGRPHãþD
SIST EN 1171:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1171
September
t r s w ICS
t uä r x rä u r Supersedes EN
s s y sã t r r tEnglish Version

Industrial valves æ Cast iron gate valves Robinetterie industrielle æ Robinetsævannes en fonte

Industriearmaturen æ Schieber aus Gusseisen This European Standard was approved by CEN on

s August
t r s wä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels

t r s w CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s s y sã t r s w ESIST EN 1171:2015

EN 1171:2015 (E) 2 Contents 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 characteristics ............................................................................................................................................. 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 Annex 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 Directive 97/23/EC ...................................................................................................... 18 Bibliography .......................................................................................................................................................................... 19

SIST EN 1171:2015

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 standard, 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. CEN [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 of 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, 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, 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 United Kingdom. SIST EN 1171:2015

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 applications. 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 ; 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 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 19:2002, Industrial valves — Marking of metallic valves EN 545:2010, Ductile iron pipes, fittings, accessories 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, Valves — 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 metallic 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 with 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 SIST EN 1171:2015

EN 1171:2015 (E) 5 EN 12570, 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 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, defined in EU Directive 97/23/EC (PED) are equivalent to the terms allowable pressure, ps, and test pressure, pt, defined in EN 736–3. 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 increases (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, 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 of EN 1561 for grey cast iron, EN 1562 for malleable cast iron and EN 1563 for spheroidal graphite cast iron. SIST EN 1171:2015

EN 1171:2015 (E) 6 Table 1 — Body and bonnet materials Graphite structure European Standard Designation short name Grey cast iron EN 12516–4:2014 EN-GJL-200

EN 12516–4:2014 EN-GJL-250 Spheroidal graphite cast iron EN 12516–4:2014 EN-GJS-350-22-LT

EN 12516–4:2014 EN-GJS-350–22-RT
EN 12516–4:2014 EN-GJS-400–18-LT
EN 12516–4:2014 EN-GJS-400–18-RT
EN 12516–4:2014 EN-GJS-400–15
EN 12516–4:2014 EN-GJS-500–7
EN 12516–4:2014 EN-GJS-600–3 Malleable cast iron EN 12516–4:2014 EN-GJMB-300–6
EN 12516–4:2014 EN-GJMB-350–10

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 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 manufacturer's technical documentation. The trim comprises the following: a) stem; b) obturator 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 for the equivalent ISO mate

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