SIST EN 558:2017

SLOVENSKI STANDARD
SIST EN 558:2017
01-maj-2017
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SIST EN 26554:2000
SIST EN 558:2008+A1:2012
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Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in
flanged pipe systems - PN and Class designated valves
Industriearmaturen - Baulängen von Armaturen aus Metall zum Einbau in Rohrleitungen
mit Flanschen - Nach PN und Class bezeichnete Armaturen
Robinetterie industrielle - Dimensions face-à-face et face-à-axe de la robinetterie
métallique utilisée dans les systèmes de canalisations à brides - Appareils de
robinetterie désignés PN et Class
Ta slovenski standard je istoveten z: EN 558:2017
ICS:
23.060.01 Ventili na splošno Valves in general
SIST EN 558:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 558:2017

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SIST EN 558:2017


EN 558
EUROPEAN STANDARD

NORME EUROPÉENNE

February 2017
EUROPÄISCHE NORM
ICS 23.040.99; 23.060.10 Supersedes EN 26554:1991, EN 558:2008+A1:2011
English Version

Industrial valves - Face-to-face and centre-to-face
dimensions of metal valves for use in flanged pipe systems
- PN and Class designated valves
Robinetterie industrielle - Dimensions face-à-face et Industriearmaturen - Baulängen von Armaturen aus
face-à-axe de la robinetterie métallique utilisée dans Metall zum Einbau in Rohrleitungen mit Flanschen -
les systèmes de canalisations à brides - Appareils de Nach PN und Class bezeichnete Armaturen
robinetterie désignés PN et Class
This European Standard was approved by CEN on 25 December 2016.

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 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 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 standards 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 558:2017 E
worldwide for CEN national Members.

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SIST EN 558:2017
EN 558:2017 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Dimensions and tolerances . 8
4.1 Basic series . 8
4.2 Face-to-face and centre-to-face dimensions. 8
4.2.1 General . 8
4.2.2 Class designated valves with ring joint flanges . 8
4.2.3 Valves with lining . 9
4.2.4 Raised face flanges . 10
4.3 Tolerances . 10
Annex A (informative) Origin of basic series . 29
Annex B (informative) Relationship between DN and NPS . 32
Bibliography . 33

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SIST EN 558:2017
EN 558:2017 (E)
European foreword
This document (EN 558:2017) 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 2017, and conflicting national standards shall
be withdrawn at the latest by August 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 558:2008+A1:2011 and EN 26554:1991.
The main changes to the previous edition are the following:
— PN 500 has been deleted from the scope;
— Figure 4 has been updated;
— 4.2.4 for raised face flanges has been simplified and Figure 6 has been deleted;
— DN 1050 has been added in the scope, Table 2 and Table B.1;
— Basic series 111 to 124 have been added in Table 2 and in Table A.1;
— FTF series 117 to 121, Class 250 and Class 600 have been added in Table 12;
— FTF series 111 and 112 have been added in Table 13;
— A new Table 16 was added for steam traps.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
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SIST EN 558:2017
EN 558:2017 (E)
Introduction
The basic series given in this document are taken from the original series shown in Annex A. Changes
made to the original series will not be automatically incorporated into this document.
The numbers of the existing ISO basic series are maintained as in ISO 5752:1982.
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SIST EN 558:2017
EN 558:2017 (E)
1 Scope
This European Standard specifies the “face–to-face” (FTF) and “centre-to-face” (CTF) dimensions for PN
and Class designated metal valves used in flanged pipe systems.
This European Standard covers valves with the following PN, Class and DN values:
— PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400;
— Class 125; Class 150; Class 250; Class 300; Class 600; Class 900; Class 1 500; Class 2 500;
— DN 10; DN 15; 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 1 000; DN 1050; DN 1 200; DN 1 400; DN 1 600; DN 1 800; DN 2 000.
For valves in other shell materials than metal the same FTF and CTF dimensions may be used.
For relationship between DN and NPS see Annex B.
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 736-1, Valves - Terminology - Part 1: Definition of types of valves
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 736-1 and the following apply.
3.1
face-to-face dimensions
(FTF)
[straight pattern valves]
distance between the two planes perpendicular to the valve axis located at the extremities of the body
end ports or as specified in the relevant valve product standard
Note 1 to entry: See Figures 1 to 4.
Note 2 to entry: In millimetres.
3.2
centre-to-face dimensions
(CTF)
[angle pattern valves]
distance, between the plane located at the extremity of either body end port and perpendicular to its
axis and the axis of the other body end port
Note 1 to entry: See Figures 1 to 4.
Note 2 to entry: In millimetres.
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SIST EN 558:2017
EN 558:2017 (E)

Key
a face-to-face (FTF)
b centre-to-face (CTF)
Figure 1 — Face to face and centre to face dimensions

Type A Type B
Key
a face-to-face (FTF)
Figure 2 — Flanged valves PN and Class designated (flat and raised faces)

Type C Type D Type E Type F Type G Type H
Key
a face-to-face (FTF)
Figure 3 — Flanged valves PN designated (spigot and recess)
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SIST EN 558:2017
EN 558:2017 (E)
 Class 150 and Class 300 Class 600 and above
Large or small male face


Large or small female face


Large or small tongue

Large or small groove


NOTE For elevation e, see appropriate flange standard.
Key
a for dimensions see Table 2
b face-to-face (FTF)
c centre-to-face (CTF)
e elevation
Figure 4 — Flanged valves Class designated
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SIST EN 558:2017
EN 558:2017 (E)
4 Dimensions and tolerances
4.1 Basic series
The basic series of FTF and CTF dimensions shall be as given in Table 2.
4.2 Face-to-face and centre-to-face dimensions
4.2.1 General
The FTF and CTF dimensions shall be in accordance with Figures 1 to 4 and Table 2.
For each type of valve, the basic series to be taken into consideration are given in Table 5 to Table 16.
NOTE 1 Table 2 gives complete series. In Table 5 to Table 16, the columns of series may be incomplete.
NOTE 2 For certain sizes/types of valves, alternative dimensions are permitted and these are specified in
Table 5 to Table 16 as appropriate.
NOTE 3 The origin of the basic series is shown in Annex A (informative).
4.2.2 Class designated valves with ring joint flanges
For Class designated valves with ring joint flanges, the FTF or CTF dimensions given in Table 2 shall be
increased by x as defined in Table 1 and Figure 5.

a)

b)
Key
a FTF = Dimension of Table 2 + x
b CTF = Dimension of Table 2 + 0,5 x
Figure 5 — FTF and CTF dimensions for Class designated valves with ring joint flanges
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SIST EN 558:2017
EN 558:2017 (E)
Table 1 — Additional length x for ring joint flanges
Dimensions in millimetres
Nominal
Additional length x for ring joint flanges
size
DN Class 150 Class 300 Class 600 Class 900 Class 1 500 Class 2 500
15 11,1 11,1 - 1,6
20 0
25 0 0
12,7 0
32
40 3,2
50
65
6,4
80 3,2
100 9,5
125 3,2
12,7 12,7
150 6,4
15,9 3,2
200 15,9
9,5
250
22,2
300 15,9
350 19,1
9,5
400
450 22,2
12,7
500 19,1 6,4
600 22,2 9,5 19,1 28,6
–
700
25,4 12,7
750
800 – – –
900 28,6 15,9
1 000
4.2.3 Valves with lining
For valves having a resilient lining which forms the gasket joint with the mating flanges, the FTF and
CTF dimensions shall be the distance between the extremities of the valve in the installed condition. If
the dimensions for CTF and FTF differ from the standard dimensions, they shall be given by the
manufacturer.
For valves having a resilient or hard lining, the thickness of the lining on the mating surface shall be
included in the FTF and CTF dimensions given in Table 2, unless the design of the valve precludes such
an inclusion.
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SIST EN 558:2017
EN 558:2017 (E)
If this is the case, the manufacturer shall indicate the deviation from the standardized FTF or CTF
dimensions in his documentation.
4.2.4 Raised face flanges
The raised face dimensions shall be in accordance with the applicable flange standard.
4.3 Tolerances
Tolerances on FTF and CTF dimensions are given in Table 3. Both tolerances shall be fulfilled.
End flange seating surfaces shall be parallel or perpendicular. Tolerances “c” on the parallelism or
perpendicularity as shown in Figure 6 are given in Table 4.

Figure 6 — Tolerances on parallelism and perpendicularity

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SIST EN 558:2017
EN 558:2017 (E)
Table 2 — Dimensions of basic series
Dimensions in millimetres
Basic series
DN DN
a a a a a a
1 2 3 4 5 7 10 12 13 14 15 16 18 19 20 21 25
8 9 11 22 23 24
10 130 210 102 – – 108 90 105 – – 130 – 115 – – 80 — – – 65 70 – – 10
15 130 210 108 140 165 108 90 105 108 57 130 – 115 – – 80 140 – 152 65 70 83 – 15
20 150 230 117 152 190 117 95 115 117 64 130 – 120 – – 90 152 – 178 70 75 95 – 20
25 160 230 127 165 216 127 100 115 127 70 140 – 125 120 – 100 165 – 216 80 85 108 – 25
32 180 260 140 178 229 146 105 130 140 76 165 – 130 140 – 110 178 – 229 90 95 114 – 32
40 200 260 165 190 241 159 115 130 165 83 165 106 140 240 33 120 190 33 241 95 100 151 – 40
50 230 300 178 216 292 190 125 150 203 102 203 108 150 250 43 135 216 43 267 105 115 146 – 50
65 290 340 190 241 330 216 145 170 216 108 222 112 170 270 46 165 241 46 292 115 125 165 – 65
80 310 380 203 283 356 254 155 190 241 121 241 114 180 280 64 185 283 46 318 125 135 178 49 80
100 350 430 229 305 432 305 175 215 292 146 305 127 190 300 64 229 305 52 356 135 146 216 56 100
125 400 500 254 381 508 356 200 250 330 178 356 140 200 325 70 – 381 56 400 – – 254 64 125
150 480 550 267 403 559 406 225 275 356 203 394 140 210 350 76 – 403 56 444 – – 279 70 150
200 600 650 292 419 660 521 275 325 495 248 457 152 230 400 89 – 419 60 533 – – 330 71 200
250 730 775 330 457 787 635 325 390 622 311 533 165 250 450 114 – 457 68 622 – – 394 76 250
300 850 900 356 502 838 749 375 450 698 349 610 178 270 500 114 – 502 78 711 – – 419 83 300
350 980 1 025 381 762 889 – 425 515 787 394 686 190 290 550 127 – 572 78 838 – – – 92 350
400 1 100 1 150 406 838 991 – 475 575 914 457 762 216 310 600 140 – 610 102 864 – – – 102 400
450 1 200 1 275 432 914 1 092 – 500 – 978 483 864 222 330 650 152 – 660 114 978 – – – 114 450
500 1 250 1 400 457 991 1 194 – – 700 978 – 914 229 350 700 152 – 711 127 1 016 – – – 127 500
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SIST EN 558:2017
EN 558:2017 (E)
Basic series
DN DN
a a a a a a
1 2 3 4 5 7 10 12 13 14 15 16 18 19 20 21 25
8 9 11 22 23 24
600 1 450 1 600 508 1 143 1 397 – – – 1 295 – 1 067 267 390 800 178 – 787 154 1 346 – – – 154 600
700 1 650 – 610 – 1 549 – – – 1 448 – – 292 430 900 229 – – 165 1 499 – – – – 700
750 – – 610 1 397 1 651 – – – 1 524 – – – – – – – – 165 190 – – – – – 750
800 1 850 – 660 – 1 651 – – – 1 676 – – 318 470 1 000 241 – – 190 1 778 – – – – 800
900 2 050 – 711 – 2 083 – – – 1 956 – – 330 510 1 100 241 – – 200 203 – – – – – 900
1 000 2 250 – 813 – – – – – – – – 410 550 1 200 300 – – 251 216 – – – – – 1 000
1 050 – – – – – – – – – – – – – – – – – – – – – – – – 1 050
1 200 – – – – – – – – – – – 470 630 – 350 – – 276 254 – – – – – 1 200
1 400 – – – – – – – – – – – 530 710 – 390 – – 279 – – – – – 1 400
1 600 – – – – – – – – – – – 600 790 – 440 – – 318 – – – – – 1 600
1 800 – – – – – – – – – – – 670 870 – 490 – – 356 – – – – – 1 800
2 000 – – – – – – – – – – – 760 950 – 540 – – 406 – – – – – 2000
a
CTF dimensions for angle pattern valves.
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SIST EN 558:2017
EN 558:2017 (E)
Table 2 (continued)
Basic series
DN DN
a a a a
26 27 28 29 30 33 36 37 38 39 43 45 46 47 48 49 50 51 52 53 54
32 40 41 42
10 – 115 130 108 – – – – – – – – – – – – – – – – – – – – – 10
15 – 115 130 108 150 76 – – – – – – – – 90 140 165 – – 16 – – 25 – – 15
20 – 120 150 117,5 160 89 – 76 – – – – – – 100 152 250 75 – 19 – – 31,5 – 229 20
25 – 125 160 127 160 102 – 102 184 197 210 92 98 105 115 210 255 80 – 22 – – 35,5 – 254 25
32 – 130 180 127 180 108 – – – – – – – – 130 230 265 90 – 28 – – 40 – 279 32
40 240 140 200 136 190 114 152 114 222 235 251 111 117 125 150 240 280 100 180 31,5 – – 45 38 305 40
50 250 150 230 142 200 133 178 124 254 267 286 127 133 143 170 250 300 110 200 40 54 54 56 40 368 50
65 290 170 290 154 215 146 216 – – – – – – – – 270 340 130 240 46 54 60 63 42 419 65
80 310 180 310 160 230 159 254 165 298 317 337 149 159 168 – 280 360 150 260 50 57 67 71 44 381 80
100 350 190 350 172 250 178 305 194 352 368 394 176 184 197 – 300 400 160 300 60 64 67 80 46 457 100
125 400 325 400 186 275 200 381 – – – – – – – – 350 450 200 350 90 70 83 110 48 551 125
150 450 350 450 200 300 222 457 229 451 473 508 225 236 254 – 375 500 210 400 106 76 95 125 50 610 150
200 550 400 550 228 350 279 584 243 543 568 610 272 284 305 – 425 600 – 500 140 95 127 160 60 737 200
250 650 450 650 255 400 311 711 297 673 708 752 337 354 376 – 450 700 – 600 – 108 140 200 65 838 250
300 750 500 750 285 425 356 813 338 737 775 819 368 387 410 – 500 800 – 700 – 143 181 250 75 965 300
350 850 550 850 315 475 – 889 – 889 927 972 445 464 486 – 550 – – 800 – 184 222 280 80 1 029 350
400 950 762 950 340 525 – 991 400 1 016 1 057 1 108 508 529 554 – 600 – – 900 – 191 232 – 95 1 130 400
450 1 050 – – 360 575 – 1 092 457 – – – – – – – – – – 1 000 – 203 264 – 107 1 219 450
500 1 150 914 1 150 380 625 – 1 194 508 – – – – – – – – – – 1 100 – 213 292 – 120 1 321 500
600 1 350 – – 425 725 – 1 397 610 – – – – – – – – – – 1 300 – 222 318 – 144 1 549 600
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SIST EN 558:2017
EN 558:2017 (E)
Basic series
DN DN
a a a a
26 27 28 29 30 33 36 37 38 39 43 45 46 47 48 49 50 51 52 53 54
32 40 41 42
700 1 550 – – 470 825 – 1 549 – – – – – – – – – – – 1 500 – 321 381 – 160 – 700
750 – – – – – – – – – – – – – – – – – – – – – – – 180 – 750
800 1 750 – – 510 925 – – – – – – – – – – – – – 1 700 – 356 489 – 195 – 800
900 1 950 – – 555 1 025 – – – – – – – – – – – – – 1 900 – 368 – – 210 – 900
1 000 2 150 – – 600 1 125 – – – – – – – – – – – – – 2 100 – 419 – – – – 1 000
1 050 – – – – – – – – – – – – – – – – – – – – – – – – – 1 050
1 200 – – – – – – – – – – – – – – – – – – – – – – – – – 1 200
1 400 – – – – – – – – – – – – – – – – – – – – – – – – – 1 400
1 600 – – – – – – – – – – – – – – – – – – – – – – – – – 1 600
1 800 – – – – – – – – – – – – – – – – – – – – – – – – – 1 800
2 000 – – – – – – – – – – – – – – – – – – – – – – – – – 2 000
a
CTF dimensions for globe control valves, angle pattern.
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SIST EN 558:2017
EN 55
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