SIST EN 593:2004

SLOVENSKI STANDARD
01-september-2004
1DGRPHãþD
SIST EN 593:2000
Industrijski ventili - Kovinske lopute
Industrial valves - Metallic butterfly valves
Industriearmaturen - Metallische Klappen
Robinetterie industrielle - Robinets métalliques a papillon
Ta slovenski standard je istoveten z: EN 593:2004
ICS:
23.060.30
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 593
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2004
ICS 23.060.30 Supersedes EN 593:1998
English version
Industrial valves - Metallic butterfly valves
Robinetterie industrielle - Robinets métalliques à papillon Industriearmaturen - Metallische Klappen
This European Standard was approved by CEN on 24 December 2003.
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 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 593:2004: E
worldwide for CEN national Members.

Contents page
Foreword. 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions. 5
4 Requirements . 8
4.1 Design . 8
4.1.1 Construction. 8
4.1.2 Materials. 10
4.1.3 Pressure/temperature ratings. 10
4.1.4 Dimensions and tolerances . 11
4.1.5 Operation . 12
4.1.6 Permanent joining. 13
4.2 Functional characteristics . 13
4.2.1 Application. 13
4.2.2 Design strength. 13
4.2.3 Flow characteristics . 13
4.2.4 Leak tightness. 14
5 Testing procedures. 14
5.1 Pressure tests . 14
5.2 Operability test. 15
5.3 Other tests . 15
6 Declaration of compliance . 15
7 Designation. 15
8 Marking and preparation for storage and transportation . 15
8.1 Marking . 15
8.2 Preparation for storage and transportation . 16
Annex A (informative) Information to be supplied by the purchaser. 17
Annex B (informative) Trim material list . 19
Annex C (informative) Environmental corrosion protection. 20
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 97/23/EC (PED) . 21
Bibliography . 22
Foreword
This document (EN 593:2004) 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 August 2004 and conflicting national standards shall be withdrawn at
the latest by August 2004.
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(s).
For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.
This document supersedes EN 593:1998.
The informative annexes A, B and C can be used for practical application of this product standard.
This document includes a Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and the United Kingdom.
1 Scope
This standard specifies requirements for butterfly valves having metallic bodies for use in flanged or butt
welding piping systems and used for isolating, regulating or control applications.
The PN and Class ranges are :
 PN 2,5 ; PN 6 ; PN 10 ; PN 16 ; PN 25 ; PN 40 ; Class 150 ; Class 300.
The DN range is :
 DN 20 ; DN 25 ; DN 32 ; 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 750 ; DN 800 ; DN 900 ; DN 1000 ;
DN 1200 ; DN 1400 ; DN 1600 ; DN 1800 ; DN 2000 ; DN 2200 ; DN 2400.
DN 750 is used only for Class 150 and Class 300.
For special application as industrial process control valves, see EN 1349 and EN 60534-2-1.
2 Normative references
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 (including amendments).
EN 19:2002, Industrial valves – Marking of metallic valves.
EN 287-1, Approval testing of welders – Fusion welding – Part 1 : Steels.
EN ISO 15607, Specification and qualification of welding procedures for metallic materials - Part 1: General
rules (ISO 15607:2003)
EN 558-1, Industrial valves – Face-to-face and centre-to-face dimensions of metal valves for use in flanged
pipe systems – Part 1 : PN-designated valves.
EN 558-2, Industrial valves – Face-to-face and centre-to-face dimensions of metal valves for use in flanged
pipe systems – Part 2 : 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 736-3:1999, Valves – Terminology – Part 3 : Definition of terms.
EN 1092-1, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN
designated – Part 1 : Steel flanges.
EN 1092-2, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN
designated – Part 2 : Cast iron flanges.
EN 1092-3, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN
designated – Part 3 : Copper alloy flanges.
EN 1092-4, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN
designated – Part 4 : Aluminium alloy flanges.
EN 1267, Valves – Test of flow resistance using water as test fluid.
EN 1418, Welding personnel – Approval testing of welding operators for fusion welding and resistance weld
setters for fully mechanized and automatic welding of metallic materials.
prEN 1759-1, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, Class
designated – Part 1: Steel flanges, NPS 1/2 to 24.
EN 1759-3, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, Class
designated – Part 3 : Copper alloy flanges.
EN 1759-4, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, Class
designated – Part 4: Aluminium alloy flanges.
EN 10269, Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties.
EN 12266-1:2003, Industrial valves – Testing of valves – Part 1 : Pressure tests, test procedures and
acceptance criteria – Mandatory requirements.
EN 12266-2, Industrial valves – Testing of valves – Part 2 : Tests, test procedures and acceptance criteria –
Supplementary requirements.
prEN 12516-1, Industrial valves – Shell design strength – Part 1: Tabulation method for steel valve shells.
prEN 12516-2, Industrial valves – Shell design strength – Part 2 : Calculation method for steel valve shells.
EN 12516-3, Valves – Shell design strength – Part 3 : Experimental method.
EN 12570, Industrial valves – Method for sizing the operating element.
EN 12627, Industrial valves – Butt welding ends for steel valves.
EN 12982, Industrial valves – End-to-end and centre-to-end dimensions for butt welding end valves.
EN 60534-2-3, Industrial-process control valves – Part 2-3 : Flow capacity – Test procedures (IEC 60534-2-
3:1997).
EN ISO 1043-1, Plastics – Symbols and abbreviated terms – Part 1: Basic polymers and their special
characteristics (ISO 1043-1:2001).
EN ISO 5211, Industrial valves – Part-turn valve actuator attachments (ISO 5211:2001).
ISO 1629, Rubber and lattices – Nomenclature.
ISO 10497, Testing of valves – Fire type-testing requirements.
ASME B1.1, Unified inch screw threads, UN and UNC thread form.
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 736-1, EN 736-2 and
EN 736-3 and the following apply.
3.1
maximum allowable pressure, PS
maximum pressure for which the equipment is designed, as specified by the manufacturer
3.2
maximum allowable temperature, TS
maximum temperature for which the equipment is designed, as specified by the manufacturer
3.3
end of line service
condition that occurs when the downstream side of the valve is opened to atmosphere
3.4
driving shaft
shaft connected to the obturator to operate the valve in the case of a multi-shaft valve
3.5
double flanged butterfly valve
butterfly valve having double flanged body ends for connection to flanges of adjacent components by
individual bolting (see Figure 1)
Figure 1 — Double flanged body
3.6
wafer butterfly valve
butterfly valve intended for clamping between flanges of adjacent components
NOTE Different body shapes are possible (see Figures 2, 3 and 4).
Figure 2 — Flangeless wafer body
Figure 3a — Valve with central lugs Figure 3b — Central single flange valve
Figure 3c — Valve with lugs with internally threaded Figure 3d — Single-flange valve with internally
holes threaded holes
Figure 3 — Single flange or lugged wafer body
Figure 4 — "U" section wafer body
3.7
butt welding end butterfly valve
butterfly valve intended for butt welding into a pipeline (see Figure 5)
Figure 5 — Butt welding end body
3.8
tri
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