SIST EN 558:2008

SLOVENSKI STANDARD
SIST EN 558:2008
01-julij-2008
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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-a-face et face-a-axe de la robinetterie
métallique utilisée dans les systemes de canalisations a brides - Appareils de
robinetterie désignés PN et Class
Ta slovenski standard je istoveten z: EN 558:2008
ICS:
23.060.01 Ventili na splošno Valves in general
SIST EN 558:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 558
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2008
ICS 23.060.10 Supersedes EN 558-1:1995, EN 558-2:1995
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 face-à- Industriearmaturen - Baulängen von Armaturen aus Metall
axe de la robinetterie métallique utilisée dans les systèmes zum Einbau in Rohrleitungen mit Flanschen - Nach PN und
de canalisations à brides - Appareils de robinetterie Class bezeichnete Armaturen
désignés PN et Class
This European Standard was approved by CEN on 14 December 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, 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
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 558:2008: E
worldwide for CEN national Members.

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EN 558:2008 (E)
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Dimensions and tolerances .8
Annex A (informative) Origin of basic series.26
Annex B (informative) Relationship between DN and NPS .28
Bibliography .29

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EN 558:2008 (E)
Foreword
This document (EN 558:2008) 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 July 2008, and conflicting national standards shall be withdrawn at the
latest by July 2008.
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.
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, Cyprus, Czech Repub-
lic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and the United Kingdom.
This document supersedes EN 558-1:1995 and EN 558-2:1995.
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EN 558:2008 (E)
Introduction
The basic series given in this document are taken from the original series shown in Annex A (informative).
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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EN 558:2008 (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 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; PN 500
 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 1 200; DN 1 400; DN 1 600; DN 1 800; DN 2 000.
The face-to-face dimensions of flanged automatic steam traps are specified in EN 26554.
For valves in other shell materials than metal the same FTF and CTF dimensions may be used.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated refer-
ences, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
EN 736-1:1995, Valves - Terminology - Part 1: Definition of types of valves
ISO 5752:1982, Metal valves for use in flanged pipe systems — Face-to-face and centre-to-face dimensions
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions of EN 736-1:1995, and the following
apply.
3.1
face-to-face dimensions (FTF)
(straight pattern valves)
distance, in millimetres, 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 (see Figures 1 to 3)
3.2
centre-to-face dimensions (CTF)
(angle pattern valves)
distance, in millimetres, 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 (Figures 1 to 3)
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EN 558:2008 (E)

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


Key a face-to-face (FTF) Type A   Type B

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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EN 558:2008 (E)
Dimensions in millimetres

Class 150 and Class 300 Class 600


Large or small male face




Large or small female face





Large or small tongue



Large or small groove



Key
a For dimensions see Table 2  b face-to-face (FTF)  c centre-to-face (CTF)
Figure 4 - Flanged valves Class designated
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EN 558:2008 (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.
For each type of valve, the basic series to be taken into consideration are given in Table 4 to Table 14.
NOTE 1 Table 2 gives complete series. In Table 4 to Table 14 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 4 to
Table 14 as appropriate.
NOTE 3 The origin of the basic series is shown in Annex A (informative).
For Class designated valves with ring joint flanges, the FTF or CTF dimensions given in Table 2 shall be in-
creased by x as defined in the Table 1.

Key

1 FTF = Dimension of Table 2 + x a face-to-face (FTF)
2 CTF = Dimension of Table 2 + 0,5 x b centre-to-face (CTF)
Figure 5 - FTF and CTF dimensions for Class designated valves with ring joint flanges
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EN 558:2008 (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
15 11,1 11,1 - 1,6
20
25
12,7 0
32
40
50
65
80
100
125
12,7
150
15,9  3,2
200
250
300
350
400
450
500 19,1  6,4
600 22,2  9,5
700
25,4 12,7
750
800 —
900 28,6 15,9
1 000

4.2.2 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 manufac-
turer.
4.2.3 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.
If this is the case, the manufacturer shall indicate the deviation from the standardised FTF or CTF dimensions
in his documentation.
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EN 558:2008 (E)

4.2.4 Raised face flanges
For valves:
 having flanges with 1,6 mm raised flange:
 in grey cast iron, Class 250;
 ductile cast iron, Class 150 and 300;
 having flanges with 6,4 mm raised flange:
 in steel, Class 600.
The FTF and CTF dimensions shall be in accordance with Figure 1 and Figure 6.


        Dimensions in millimetres

Key
a face-to-face (FTF) or centre-to-face (CTF), for dimensions see Table 2

Figure 6 - FTF and CTF dimensions for Class designated valves with raised face flanges

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EN 558:2008 (E)

4.3 Tolerances
Tolerances on FTF and CTF dimensions are given in Table 3a. Both Tolerances shall be fulfilled.
End flange seating surfaces shall be parallel or perpendicular. Tolerances “c” on the parallelism or perpen-
dicularity as shown in Figure 7 are given in Table 3b.


Figure 7 - Tolerances on parallelism and perpendicularity

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EN 558:2008 (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 8 9 10 11 12 13 14 15 16 18 19 20 21 22 23 24 25
   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   32
  180  260 140  178  229 146 105 130  140 76  165 — 130  140 — 110 178 —  229 90  95 114 —
   40   40
  200  260 165  190  241 159 115 130  165 83  165 106 140  240  33 120 190  33  241 95 100 151 —
   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  150
  480  550 267  403  559 406 225 275  356 203  394 140 210  350  76 — 403  56  444 — — 279  70
  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  450
1 200 1 275 432  914 1 092 — 500 —  978 483  864 222 330  650 152 — 660 114  978 — — — 114
  500  500
1 250 1 400 457  991 1 194 — — 700  978 —  914 229 350  700 152 — 711 127 1 016 — — — 127
  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 — — — — — — — — 1651901 594 — — — —  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 2 083 — — — —  900
1 000 1 000
2 250 — 813 — — — — — — — — 410 550 1 200 300 — — 251216 — — — — —
1 200 — — — — — — — — — — — 470 630 — 350 — — 276254 — — — — — 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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EN 558:2008 (E)
Table 2 (continued)
Dimensions in millimetres
Basic series
DN DN
a
a a a
26 27 28 29 30 32 33 36 37 38 39 40 43 45 46 47 48 49 50 51 52 53 54
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   25
— 125  160 127  160 102 — 102  184  197  210 92  98 105 115 210 255  80 —   22 — —   35,5 — 254
   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   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
   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  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
  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  200
  550 400  550 228  350 279  584 243  543  568  610 272 284 305 — 425 600 —  500 140  95 127  160  60 737
  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  350
  850 550  850 315  475 —  889 —  889  927  972 445 464 486 — 550 — —  800 — 184 222  280  80 1 029
  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  500
1 150 914 1 150 380  625 — 1 194 508 — — — — — — — — — — 1 100 — 213 292 — 120 1 321
  600 1 350 — —  425  725 — 1 397 610 — — — — — — — — — — 1 300 — 222 318 — 144 1 549  600
  700 1 550 — —  470  825 — 1 549 — — — — — — — — — — — 1 500 — 321 381 — 160 —  700
  750  750
— — — — — — — — — — — — — — — — — — — —
...