EN ISO 1452-3:2010

SLOVENSKI STANDARD
01-december-2010
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Plastics piping systems for water supply and for buried and above-ground drainage and
sewerage under pressure - Unplasticized poly(vinyl chloride) (PVC-U) - Part 3: Fittings
(ISO 1452-3:2009, corrected version 2010-03-01)
Kunststoff-Rohrleitungssysteme für die Wasserversorgung und für erdverlegte und nicht
erdverlegte Entwässerungs- und Abwasserdruckleitungen - Weichmacherfreies
Polyvinylchlorid (PVC-U) - Teil 3: Formstücke (ISO 1452-3:2009, korrigierte Fassung
2010-03-01)
Systèmes de canalisations en plastique pour l'alimentation en eau, pour branchements
et collecteurs d'assainissement enterrés et aériens avec pression - Poly(chlorure de
vinyle) non plastifié (PVC-U) - Partie 3: Raccords (ISO 1452-3:2009, version corrigée
2010-03-01)
Ta slovenski standard je istoveten z: EN ISO 1452-3:2010
ICS:
23.040.45 Fitingi iz polimernih Plastics fittings
materialov
91.140.60 Sistemi za oskrbo z vodo Water supply systems
93.025 Zunanji sistemi za prevajanje External water conveyance
vode systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 1452-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2010
ICS 93.025; 91.140.60; 23.040.20; 23.040.45 Supersedes EN ISO 1452-3:2009
English Version
Plastics piping systems for water supply and for buried and
above-ground drainage and sewerage under pressure -
Unplasticized poly(vinyl chloride) (PVC-U) - Part 3: Fittings (ISO
1452-3:2009, corrected version 2010-03-01)
Systèmes de canalisations en plastique pour l'alimentation Kunststoff-Rohrleitungssysteme für die Wasserversorgung
en eau, pour branchements et collecteurs d'assainissement und für erdverlegte und nicht erdverlegte Entwässerungs-
enterrés et aériens avec pression - Poly(chlorure de vinyle) und Abwasserdruckleitungen - Weichmacherfreies
non plastifié (PVC-U) - Partie 3: Raccords (ISO 1452- Polyvinylchlorid (PVC-U) - Teil 3: Formstücke (ISO 1452-
3:2009, version corrigée 2010-03-01) 3:2009, korrigierte Fassung 2010-03-01)
This European Standard was approved by CEN on 23 September 2010.

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, Croatia, 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: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1452-3:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 1452-3:2009, corrected version 2010-03-01 has been prepared by Technical Committee
ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids” of the International Organization for
Standardization (ISO) and has been taken over as EN ISO 1452-3:2010 by Technical Committee CEN/TC 155
“Plastics piping systems and ducting systems” the secretariat of which is held by NEN.
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 April 2011, and conflicting national standards shall be withdrawn at the
latest by April 2011.
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 ISO 1452-3:2009.
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, 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.
Endorsement notice
The text of ISO 1452-3:2009, corrected version 2010-03-01 has been approved by CEN as a EN ISO 1452-
3:2010 without any modification.

INTERNATIONAL ISO
STANDARD 1452-3
First edition
2009-12-01
Corrected version
2010-03-01
Plastics piping systems for water supply
and for buried and above-ground
drainage and sewerage under pressure —
Unplasticized poly(vinyl chloride)
(PVC-U) —
Part 3:
Fittings
Systèmes de canalisations en plastique pour l'alimentation en eau, pour
branchements et collecteurs d'assainissement enterrés et aériens avec
pression — Poly(chlorure de vinyle) non plastifié (PVC-U) —
Partie 3: Raccords
Reference number
ISO 1452-3:2009(E)
©
ISO 2009
ISO 1452-3:2009(E)
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©  ISO 2009
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ii © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.2
3 Terms, definitions, symbols and abbreviated terms .3
3.1 Terms and definitions .3
3.2 Symbols.3
4 Material .3
4.1 Fitting material.3
4.2 Density.3
4.3 MRS-value .4
5 General characteristics.4
5.1 Appearance .4
5.2 Colour .4
5.3 Opacity of fittings intended for the above-ground conveyance of water.4
6 Geometrical characteristics .4
6.1 Measurement of dimensions.4
6.2 Nominal diameters .4
6.3 Fittings for solvent cementing .4
6.4 Adapter fittings .12
6.5 Tapping saddles .14
6.6 Flange adapters and flanges.17
6.7 Elastomeric ring seal fittings .20
6.8 End-load-bearing double-sockets with elastomeric seals.29
7 Classification and operating conditions.29
7.1 Classification .29
7.2 Selection of nominal pressure and pipe series S for water up to and including 25 °C .29
7.3 Determination of the allowable operating pressure for water up to 45 °C .30
8 Mechanical characteristics.30
8.1 Resistance to internal pressure of fittings or parts of fittings .30
8.2 Crushing test .31
9 Physical characteristics.31
10 Sealing rings .32
11 Adhesives.32
12 Performance requirements.32
13 Marking.32
13.1 General .32
13.2 Minimum required marking .32
13.3 Additional marking .33
Annex A (normative) Imperial(inch)-sized fittings.34
Bibliography.37

ISO 1452-3:2009(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 1452-3 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 155, Plastics piping systems and ducting systems, in collaboration with ISO Technical Committee
ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 2, Plastics pipes
and fittings for water supplies, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
This first edition cancels and replaces ISO 4422-3:1996, ISO 264:1976, ISO 264:1976/Add.1:1982,
ISO 2045:1988, ISO 2048:1990, ISO 3460:1975, ISO 4434:1977 and ISO 6455:1983, which have been
technically revised.
ISO 1452 consists of the following parts, under the general title Plastics piping systems for water supply and
for buried and above-ground drainage and sewerage under pressure — Unplasticized poly(vinyl chloride)
(PVC-U):
⎯ Part 1: General
⎯ Part 2: Pipes
⎯ Part 3: Fittings
⎯ Part 4: Valves
⎯ Part 5: Fitness for purpose of the system
Guidance for the assessment of conformity is to form the subject of a part 7.
This corrected version of ISO 1452-3:2009 incorporates the correction of Figure 8 c).
iv © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
Introduction
The System Standard, of which this is Part 3, specifies the requirements for a piping system and its
components made from unplasticized poly(vinyl chloride) (PVC-U). The piping system is intended to be used
for water supply and for buried and above-ground drainage and sewerage under pressure.
In respect of potential adverse effects on the quality of water intended for human consumption, caused by the
products covered by this part of ISO 1452, the following are relevant.
a) This part of ISO 1452 provides no information as to whether the products may be used without restriction.
b) Existing national regulations concerning the use and/or the characteristics of these products remain in
force.
Requirements and test methods for material and components, other than fittings, are specified in ISO 1452-1,
ISO 1452-2 and ISO 1452-4. Characteristics for fitness for purpose (mainly for joints) are established in
ISO 1452-5.
This part of ISO 1452 specifies the characteristics of fittings.
[1]
Guidance for installation is given in ISO/TR 4191 .
[2]
Guidance for the assessment of conformity is provided in ENV 1452-7 .
For the convenience of users of this part of ISO 1452, marking on fittings and flanges according to withdrawn
International Standards (e.g. ISO 4422-3:1996) may be considered valid for a period, e.g. up to three years
from the date of publication of this part of ISO 1452.

INTERNATIONAL STANDARD ISO 1452-3:2009(E)

Plastics piping systems for water supply and for buried and
above-ground drainage and sewerage under pressure —
Unplasticized poly(vinyl chloride) (PVC-U) —
Part 3:
Fittings
1 Scope
This part of ISO 1452 specifies the characteristics of fittings made from unplasticized poly(vinyl chloride)
(PVC-U) for piping systems intended for water supply and for buried and above-ground drainage and
sewerage under pressure.
It also specifies the test parameters for the test methods referred to in this part of ISO 1452.
In conjunction with ISO 1452-1, ISO 1452-2 and ISO 1452-5, it is applicable to PVC-U fittings and to joints
with components of PVC-U, other plastics and non-plastics materials intended to be used for the following:
a) water mains and services buried in the ground;
b) conveyance of water above ground for both outside and inside buildings;
c) buried and above-ground drainage and sewerage under pressure.
It is applicable to fittings in piping systems intended for the supply of water under pressure up to and including
25 °C (cold water), intended for human consumption and for general purposes as well as for waste water
under pressure.
This part of ISO 1452 is also applicable to components for the conveyance of water and waste water up to
and including 45 °C. For temperatures between 25 °C and 45 °C, Figure A.1 of ISO 1452-2:2009 applies.
NOTE 1 The producer and the end-user can come to agreement on the possibilities of use for temperatures above
45 °C on a case-by-case basis.
Depending on the jointing method, this part of ISO 1452 is applicable to the following types of fittings:
⎯ fittings for solvent cementing;
⎯ elastomeric ring seal fittings.
PVC-U fittings can be manufactured by injection-moulding and/or be fabricated from pipe.
This part of ISO 1452 is also applicable to PVC-U flange adapters and to the corresponding flanges made
from various materials.
This part of ISO 1452 covers a range of fitting sizes and pressure classes and gives requirements concerning
colours.
NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects,
taking into account their particular requirements and any relevant national regulations and installation practices or codes.
ISO 1452-3:2009(E)
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions,
tolerances and designation
ISO 580, Plastics piping and ducting systems — Injection-moulded thermoplastics fittings — Methods for
visually assessing the effects of heating
ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of
the resistance to internal pressure — Part 1: General method
ISO 1167-3, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of
the resistance to internal pressure — Part 3: Preparation of components
ISO 1183-1:2004, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion
method, liquid pyknometer method and titration method
ISO 1452-1:2009, Plastics piping systems for water supply and for buried and above-ground drainage and
sewerage under pressure — Unplasticized poly(vinyl chloride) (PVC-U) — Part 1: General
ISO 1452-2:2009, Plastics piping systems for water supply and for buried and above-ground drainage and
sewerage under pressure — Unplasticized poly(vinyl chloride) (PVC-U) — Part 2: Pipes
ISO 1452-5, Plastics piping systems for water supply and for buried and above-ground drainage and
sewerage under pressure — Unplasticized poly(vinyl chloride) (PVC-U) — Part 5: Fitness for purpose of the
system
ISO 2507-1:1995, Thermoplastics pipes and fittings — Vicat softening temperature — Part 1: General test
method
ISO 2507-2:1995, Thermoplastics pipes and fittings — Vicat softening temperature — Part 2: Test conditions
for unplasticized poly(vinyl chloride) (PVC-U) or chlorinated poly(vinyl chloride) (PVC-C) pipes and fittings and
for high impact resistance poly(vinyl chloride) (PVC-HI) pipes
ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
ISO 7686, Plastics pipes and fittings — Determination of opacity
ISO 13783, Plastics piping systems — Unplasticized poly(vinyl chloride) (PVC-U) end-load-bearing double-
socket joints — Test method for leaktightness and strength while subjected to bending and internal pressure
EN 802, Plastics piping and ducting systems — Injection-moulded thermoplastics fittings for pressure piping
systems — Test method for maximum deformation by crushing
2 © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms, definitions, symbols and abbreviated terms given in ISO 1452-1
and the following apply.
3.1.1
laying length
Z-length
〈socketed outlet〉 distance from the inserted tube or spigot end to the intersection point of the fitting/valve axis
(fitting or valve centre)
3.1.2
laying length
Z-length
〈spigot outlet〉 distance from the outlet end to the intersection point of the fitting/valve axis (fitting or valve
centre)
3.1.3
laying length
Z-length
〈socket with parallel outlets〉 distance between the ends of the inserted tubes or spigots
3.1.4
laying length
Z-length
〈one socket and one spigot with parallel outlets〉 distance from the inserted tube or spigot end to the end of the
spigot outlet
3.1.5
design length of bends
Z -length
d
length of an outlet, excluding any socket length or insert length of spigot
3.2 Symbols
Z Laying length (Z-length)
Z Z-design length (Z -length)
d d
r bend radius
4 Material
4.1 Fitting material
The fitting material used shall conform to ISO 1452-1 and to the requirements given in 4.2 and 4.3.
4.2 Density
The density, ρ, at 23 °C of the fitting, when measured in accordance with ISO 1183-1, shall be between the
following limits:
3 3
1 350 kg/m u ρ u 1 460 kg/m
ISO 1452-3:2009(E)
4.3 MRS-value
The fitting material shall have a minimum required strength, MRS, as defined in ISO 1452-1:2009, 4.4.1.
The manufacturer of the compound or formulation shall confirm the MRS by testing as described in
ISO 1452-1:2009, 4.4.1, 4.4.2 or 4.4.3, respectively.
The MRS value of the fitting material shall be declared by the fitting manufacturer in its technical file.
5 General characteristics
5.1 Appearance
When viewed without magnification, the internal and external surfaces of fittings shall be smooth, clean and
free from scoring, cavities and other surface defects to an extent that would prevent conformity to this part of
ISO 1452.
Each end of a fitting shall be square to its axis.
5.2 Colour
The colour of injection-moulded fittings shall be grey throughout the wall for water supply, and grey or brown
for drainage and sewerage under pressure.
The colour of fittings made from pipes shall be grey, blue or cream throughout the wall for water supply, and
grey or brown for drainage and sewerage under pressure.
5.3 Opacity of fittings intended for the above-ground conveyance of water
The wall of the fittings shall be opaque and shall not transmit more than 0,2 % of visible light when measured
in accordance with ISO 7686.
6 Geometrical characteristics
6.1 Measurement of dimensions
Dimensions shall be measured in accordance with ISO 3126.
6.2 Nominal diameters
The nominal inside diameter(s), d , of a fitting shall correspond to, and be designated by, the nominal outside
n
diameter(s) of the pipe(s) for which the fitting is designed.
6.3 Fittings for solvent cementing
6.3.1 Socket and spigot dimensions
The socket dimensions of the fittings shall be the same as for sockets on pipes and shall conform to
ISO 1452-2:2009.
The spigot length(s) shall be at least equal to the corresponding socket length(s).
4 © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
The tolerance on the diameter of the spigot ends, d , of reducing bushes (see Table 7) shall always be
positive and be as follows:
⎯ maximum 0,2 mm for diameters equal to or less than 90 mm;
⎯ maximum 0,3 mm for diameters 110 mm to 160 mm;
⎯ maximum 0,4 mm for diameters 180 mm to 225 mm;
⎯ maximum 0,5 mm for diameters 250 mm to 315 mm.
6.3.2 Diameters, laying lengths, bend radii and angles
6.3.2.1 For the following types of injection-moulded fittings, the Z-lengths shall be calculated using one of
Equations (1), (2), (3), (4), (5), (6), (7) or (8), as applicable, where α is the angle of the elbow and r is the
radius of the bend.
d
n
a) 90° elbows, 90° tees (see Table 1): Z=+1 (1)
d α
n
b) 45° elbows (see Table 1): Z=+tan 1 (2)
d α
n
c) 45° tee (see Table 1): Z=+cot t (3)
with d , u 90 mm, 110 mm, 125 mm, 140 mm, 160 mm and t = 3, 4, 6, 6, 7
n
d
α
n
Z=+tan 1 (4)
d) bends (see Table 2) Z = r = 2d (5)
n
e) short bends (see Table 5) Z = r = 0,75d (6)
n
f) reducing bushes, long (see Table 6) Z = 0,75 d + 6 (7)
⎛⎞dd⎛ ⎞
Z=+66− + (8)
g) reducing bushes, short (see Table 7)
⎜⎟⎜ ⎟
⎝⎠⎝ ⎠
The calculated values are given in Table 1 to Table 7. The calculated values may be adapted by the
manufacturer.
The manufacturer's information (e.g. catalogues) shall state the exact value(s) of the Z-length(s).
The deviation from the calculated values are recommended to be not greater than the values given in Table 1,
Table 2, Table 5, Table 6 and Table 7, as applicable.
6.3.2.2 For bends made from pipe, the Z-design-lengths, Z , and the bend radii shall be equal to or
d
greater than the values given in Table 3 and Table 4, as applicable.
NOTE 1 The Z -lengths are always greater than the corresponding socket lengths.
d
The wall thickness in the bend area of bends made from pipe shall be not less than the specified minimum
wall thickness for the corresponding pipe given in ISO 1452-2.
NOTE 2 If needed, the next pipe series with the smaller S-number can be used. See also 7.2.
ISO 1452-3:2009(E)
6.3.2.3 The following are the figures and tables for fittings for solvent cementing.
The types of fittings are shown in Figure 1.

a) 90° elbow b) 45° elbow c) 90° tee d) 45° tee e) Double-socket
Figure 1 — Types of fittings: Typical elbows, tees and double-socket
Table 1 — Calculated Z-lengths and recommended deviations for elbows, tees and double-sockets
Dimensions in millimetres
Nominal Calculated Z-length and recommended deviations
diameter
Type of fitting
90° elbow 45° elbow 90° tee 45° tee Double-socket
d Z Z Z Z Z Z
n 1
12 7 ± 1 3,5 ± 1 7 ± 1 — — 3 ± 1
16 9 ± 1 4,5 ± 1 9 ± 1 — — 3 ± 1
+2
20 11 ± 1 5 ± 1 11 ± 1 27 ± 3 6 3 ± 1
−1
+1,2 +1,2 +1,2 +2 +1,2
25 13,5 6 13,5 33 ± 3 7 3
−1 −1 −1 −1 −1
+1,6 +1,6 +1,6 +4 +2 +1,6
32 17 7,5 17 42 8 3
−3 −1
−1 −1 −1 −1
+2 +2 +2 +5 +2 +2
40 21 9,5 21 51 10 3
−1 −1 −1 −3 −1 −1
+2,5 +2,5 +2,5 +6 +2 +2
50 26 11,5 26 63 12 3
−3 −1 −1
−1 −1 −1
+3,2 +3,2 +3,2 +7 +2 +2
63 32,5 14 32,5 79 14 3
−1 −1 −1 −3 −1 −1
+4 +4 +4 +9 +2 +2
75 38,5 16,5 38,5 94 17 4
−1 −1 −1 −3 −1 −1
+5 +5 +5 +11 +3 +2
90 46 19,5 46 112 20 5
−1 −1 −1 −3 −1 −1
+6 +6 +6 +13 +3 +3
110 56 24 56 137 24 6
−1 −1 −1 −4 −1 −1
+6 +6 +6 +15 +3 +3
125 63,5 27 63,5 157 27 6
−1 −1 −1 −4 −1 −1
+7 +7 +7 +17 +4 +3
140 71 30 71 175 30 8
−1 −1 −1 −5 −1 −1
+8 +8 +8 +20 +4 +4
160 81 34 81 200 35 8
−1 −1 −1 −6 −1 −1
+8 +8 +8 +4
180 91 39 91 — — 8
−1 −1 −1 −1
+9 +9 +9 +5
200 101 43 101 — — 8
−1 −1 −1 −1
+10 +10 +10 +5
225 114 48 114 — — 10
−1 −1 −1 −1
+10 +10 +5
250 — 53 126 — — 12
−1 −1 −2
+10 +10 +5
280 — 59 141 — — 12
−1 −1 −2
+10 +10 +5
315 — 63 159 — — 14
−1 −1 −2
See Figure 1.
6 © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
Figure 2 — Bends, injection-moulded

Table 2 — Calculated Z-lengths and recommended deviations for bends, injection-moulded
Dimensions in millimetres
Calculated Z-lengths and recommended deviations
Nominal diameter
d
n
12 16 20 25 32 40 50
+1,2 +1,6 +2 +2,5
24 ± 1 32 ± 1 40 ± 1 50 64 80 100
−1 −1 −1 −1
Nominal diameter
d
n
63 75 90 110 125 140 160
+3,2
+4 +5 +6 +6 +7 +8
126 150 180 220 250 280 320
−1 −1 −1 −1 −1 −1
−1
See Figure 2.
Figure 3 — Bends made from pipes
ISO 1452-3:2009(E)
Table 3 — Calculated minimum bend radii and minimum design lengths for bends made from pipes
Dimensions in millimetres
a
Nominal Minimum Minimum design length
diameter bend radius Z
d, min
Angle, α
b
d r 11° 22° 30° 45° 60° 90°
n min
63 221 46 68 84 117 153 246
75 263 55 81 100 139 182 293
90 315 66 97 120 166 218 351
110 385 81 119 147 203 266 429
125 438 92 135 167 231 303 488
140 490 103 151 187 259 339 546
160 560 118 173 214 296 387 624
180 630 133 194 241 333 436 702
200 700 147 216 268 370 484 780
225 788 166 243 301 416 545 878
250 875 184 270 334 462 605 975
280 980 206 302 375 518 678 1 092
315 1 103 232 340 421 583 763 1 229
355 1 243 262 384 475 656 859 1 385
400 1 400 295 432 535 740 968 1 560
450 1 575 332 486 602 832 1 089 1 755
500 1 750 369 540 669 925 1 210 1 950
560 1 960 413 605 749 1 036 1 356 2 184
630 2 205 464 681 843 1 165 1 525 2 457
See Figure 3.
a
Z is calculated using Equation (9):
d, min
α
Z = (3,5d × tan ) + 0,4d . (9)
d, min n n
b
r is calculated using Equation (10):
min
r = 3,5d . (10)
min n
8 © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
Figure 4 — Short bends made from pipes
Table 4 — Calculated minimum bend radii and minimum design lengths for short bends
made from pipes
Dimensions in millimetres
a
Nominal Minimum Minimum design length
diameter bend radius Z
d, min
Angle α
b
d r 11° 22° 30° 45° 60° 90°
n min
63 157 31 46 58 81 107 173
75 187 37 55 69 96 127 206
90 225 44 66 83 116 152 248
110 275 54 81 101 141 186 303
125 312 61 92 115 161 212 344
140 350 69 103 129 180 237 385
160 400 79 118 147 206 271 440
180 450 88 133 166 231 305 495
200 500 98 147 184 257 339 550
225 562 110 166 207 289 381 619
250 625 123 184 230 321 423 688
280 700 137 206 258 360 474 770
315 787 155 232 290 405 533 866
355 887 174 261 327 456 601 976
400 1 000 196 294 368 514 677 1 100
450 1 125 221 331 414 578 762 1 238
500 1 250 245 368 460 643 847 1 375
560 1 400 275 412 515 720 948 1 540
630 1 575 309 464 580 810 1 067 1 733
See Figure 4.
a
Z is calculated using Equation (11):
d, min
α
Z = (2,5d × tan ) + 0,25d . (11)
d, min n n
b
r is calculated using Equation (12):
min
r = 2,5d . (12)
min n
ISO 1452-3:2009(E)
Figure 5 — Short bends, injection-moulded
Table 5 — Calculated Z-lengths and recommended deviations for short bends, injection-moulded
Dimensions in millimetres
Calculated laying length, Z, and recommended deviations
Nominal diameter
d
n
140 160 180 200 225 250 280 315
+7 +8 +8 +9 +9 +9 +10 +10
105 120 135 150 168 187 210 236
−1 −1 −1 −1 −1 −1 −1 −1
See Figure 5.
a)  Reducing bush, long b)  Practical application
NOTE Other designs of reducing bushes are allowed.
Figure 6 — Reducing bushes, long and example of application

10 © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
Table 6 — Calculated Z-lengths and recommended deviations for reducing bushes, long
Dimensions in millimetres
Nominal Nominal diameter of spigot
socket d
diameter
12 16 20 25 32 40 50 63 75 90 110 125 140 160
Recommended deviations for Z-lengths
± 1 ± 1,5 ± 2
d Calculated Z-lengths
12 — 18 21 25 30 — — — — — — — — —
16 — — 21 25 30 36 — — — — — — — —
20 — — — 25 30 36 44 — — — — — — —
25 — — — — 30 36 44 54 — — — — — —
32 — — — — — 36 44 54 62 — — — — —
40 — — — — — — 44 54 62 74 — — — —
50 — — — — — — — 54 62 74 88 — — —
63 — — — — — — — — 62 74 88 100 — —
75 — — — — — — — — — 74 88 100 111 —
90 — — — — — — — — — — 88 100 111 126
110 — — — — — — — — — — — 100 111 126
125 — — — — — — — — — — — — 111 126
140 — — — — — — — — — — — — — 126
See Figure 6.
a)  Reducing bush, short b)  Practical application
Figure 7 — Reducing bushes, short and example of application

ISO 1452-3:2009(E)
Table 7 — Calculated Z-lengths and recommended deviations for reducing bushes, short
Dimensions in millimetres
a
Nominal Calculated Z-lengths
socket
Nominal diameter of spigot
diameter
d
d 12 16 20 25 32 40 50 63 75 90 110 125 140 160 180 200 225 250 280 315
12 — 2 4 6,5 10 — — — — — — — — — — — — — — —
16 — — 2 4,5 8 12 — — — — — — — — — — — — — —
20 — — — 2,5 6 10 15 — — — — — — — — — — — — —
25 — — — — 3,5 7,5 12,5 19 — — — — — — — — — — — —
32 — — — — — 4 9 15,521,5 — — — — — — — — — — —
40 — — — — — — 5 11,517,5 25 — — — — — — — — — —
50 — — — — — — — 6,5 12,5 20 30 — — — — — — — — —
63 — — — — — — — — 6 13,523,5 31 — — — — — — — —
75 — — — — — — — — — 7,5 17,5 25 32,5 — — — — — — —
90 — — — — — — — — — — 10 17,5 25 35 — — — — — —
110 — — — — — — — — — — — 7,5 15 25 35 — — — — —
125 — — — — — — — — — — — — 7,5 17,527,537,5 — — — —
140 — — — — — — — — — — — — — 10 20 30 42,5 — — —
160 — — — — — — — — — — — — — — 10 20 32,5 45 — —
180 — — — — — — — — — — — — — — — 10 22,5 35 50 —
200 — — — — — — — — — — — — — — — — 12,5 25 40 57,5
225 — — — — — — — — — — — — — — — — — 12,5 27,5 45
250 — — — — — — — — — — — — — — — — — — 15 32,5
280 — — — — — — — — — — — — — — — — — — — 17,5
See Figure 7.
a
The recommended deviations are ± 1 mm.

6.4 Adapter fittings
6.4.1 Designation of adapter fittings
Adapter fittings are designated by
a) the nominal inside diameter of the fitting socket or the nominal outside diameter of the fitting spigot
according to ISO 1452-2;
b) the nominal size of the threaded part in accordance with ISO 7-1.
6.4.2 Reinforcement of adapter fittings
Adapter fittings with female threaded sockets for jointing to threaded metal pipes or fittings shall be reinforced
at the threaded outlets by any suitable method to prevent splitting of the threaded portion during assembly.
12 © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
6.4.3 Dimensions of adapter fittings
The dimensions of plain sockets and/or spigots of the adapter fittings shall conform to ISO 1452-2. The
threaded parts of the fitting shall conform to ISO 7-1. The calculated values of the Z-length(s) are given in
Table 8 and Table 9.
The manufacturer's information (e.g. catalogues) shall state the exact value(s) of the Z-length(s).

a)  90° adapter elbow b)  90° adapter tee c)  Adapter socket
Figure 8 — Typical adapter fittings — Equal
Table 8 — Calculated Z-lengths and recommended deviations for adapter fittings — Equal
Dimensions in millimetres
Diameter Size of Laying length
of socket thread Z
a b c d e
D D Z Z Z
1 2 1 2 3
12 R ¼" 7 9 4
16 R ⅜" 9 13 5
20 R ½" 11 14 5
25 R ¾" 13,5 17 5
32 R 1" 17 22 5
40 R 1 ¼" 21 28 5
50 R 1 ½" 26 38 7
63 R 2" 32,5 47 7
See Figure 8.
a
Tolerances of diameters and length of sockets in accordance with ISO 1452-2.
b
Sizes and length of pipe thread in accordance with ISO 7-1.
c
Laying length Z and tolerances in accordance with Table 1 (90° elbow).
d
Tolerances of laying length Z equal to Z .
2 1
e
Tolerances of laying length Z in accordance with Table 1 (socket).
ISO 1452-3:2009(E)
a)  Adapter socket/nipple b)  Adapter nipple c)  Adapter bush d)  Adapter bush
socket/male thread spigot/female thread
Figure 9 — Typical adapter fittings — Nipples and bushes

Table 9 — Calculated Z-lengths and recommended derivations for adapter fittings —
Nipples and bushes
Dimensions in millimetres
Adapter socket/ Adapter nipple Adapter bush Adapter bush Size of
nipple Socket/male Spigot/female thread
thread thread
a b c b a b c b d
D Z D Z D Z D Z D
3 4 4 5 5 6 6 7 2
— — 12 32 — — — — R ¼"
16 19 16 35 12 15 20 24 R ⅜"
20 23 20 42 16 22 25 27 R ½"
25 25 25 47 20 22 32 32 R ¾"
32 28 32 54 25 27 40 38 R 1"
40 31 40 60 32 29 50 46 R 1 ¼"
50 32 50 66 40 29 63 57 R 1 ½"
63 38 63 78 50 34 — — R 2"
See Figure 9.
a
Tolerances of diameters and length of sockets in accordance with ISO 1452-2.
b
Tolerances of laying length Z , Z , Z and Z in accordance with Table 1 (90° elbow).
4 5 6 7
c
Tolerances of diameters in accordance with Table 1 (reducing bush).
d
Sizes and length of pipe thread in accordance with ISO 7-1.

6.5 Tapping saddles
Tapping saddles, with or without a shut-off device, shall be fixed onto the water supply mains by solvent
cementing or mechanical fixing with elastomeric sealing. Typical tapping saddles are shown in
Figures 10, 11, 12 and 13. Their dimensions shall conform to Table 10. Other designs are allowed.

14 © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
Figure 10 — Typical socket saddle with solvent cement type socket

Figure 11 — Typical tee saddle with parallel, solvent cement type socket

Figure 12 — Typical tee saddle with right-angled, mechanical joint

ISO 1452-3:2009(E)
Figure 13 — Typical socket saddle with internally threaded socket
Table 10 — Tapping saddle dimensions
Dimensions in millimetres
Water supply mains Outlet connection
Nominal outside Inside Nominal outside Solvent cementing Solvent Internal
diameter of pipe diameter of diameter of socket mean inside cementing pipe
a b
saddle connecting pipe diameter length thread
d d d d L R
n 1 2 3 p
20 20 16 ½
32 32
25 25 19 ¾
20 20 16 ½
40 40 25 25 19 ¾
32 32 22 1
20 20 16 ½
50 50 25 25 19 ¾
32 32 22 1
20 20 16 ½
25 25 19 ¾
63 63 32 32 22 1
40 40 26 1 ¼
50 50 31 1 ½
20 20 16 ½
25 25 19 ¾
75 75 32 32 22 1
40 40 26 1 ¼
50 50 31 1 ½
20 20 16 ½
25 25 19 ¾
90 90 32 32 22 1
40 40 26 1 ¼
50 50 31 1 ½
20 20 16 ½
25 25 19 ¾
32 32 22 1
110 110
40 40 26 1 ¼
50 50 31 1 ½
63 63 38 2
16 © ISO 2009 – All rights reserved

ISO 1452-3:2009(E)
Table 10 (continued)
Dimensions in millimetres
Water supply mains Outlet connection
Nominal outside Inside Nominal outside Solvent cementing Solvent Internal
diameter of pipe diameter of diameter of socket mean inside cementing pipe
a b
saddle connecting pipe diameter length thread
d d d d L R
n 1 2 3 p
32 32 22 1
125 125 50 50 31 1 ½
63 63 38 2
25 25 19 ¾
32 32 22 1
140 140
50 50 31 1 ½
63 63 38 2
20 20 16 ½
25 25 19 ¾
32 32 22 1
160 160
40 40 26 1 ¼
50 50 31 1 ½
63 63 38 2
20 20 16 ½
25 25 19 ¾
32 32 22 1
200 200 40 40 26 1 ¼
50 50 31 1 ½
63 63 38 2
90 90 51 3
32 32 22 1
40 40 26 1 ¼
225 225 50 50 31 1 ½
63 63 38 2
90 90 51 3
20 20 16 ½
25 25 19 ¾
250 250 32 32 22 1
40 40 26 1 ¼
50 50 31 1 ½
20 16 ½
25 25 19 ¾
315 315 32
32 22 1
40 40 26 1 ¼
50 31 1 ½
See Figures 10 to 13.
+0,3
a
For diameters d , the tolerance is mm.
b
Jointing pipe thread, R , shall conform to ISO 7-1.
p
The length of the saddle, b, shall be specified in the technical file of the manufacturer.
6.6 Flange adapters and flanges
6.6.1 Adapters for backing flange
Adapters for PN 10 and PN 16 flanges shall conform to the dimensions given in Table 11, where the
dimensions d , Z, Z , and r are as indicated in Figure 14.
1 1
NOTE These dimensions have been chosen to ensure practical interchangeability.
ISO 1452-3:2009(E)
Key
1 jointing face for flask gasket
2 jointing face with O-ring groove
Figure 14 — Dimensions of adapters for backing flanges
Table 11 — Dimensions of adapters for PN 10 and PN 16 flanges
Dimensions in millimetres
Adapters Flanges
Nominal diameter External Contour Jointing face Nominal size of
a
of socket diameter radius flange
flat with groove
d d r Z Z DN
n 1 max 1
16 22 ± 0,1 1 3 6 10
20 27 ± 0,15 1 3 6 15
25 33 ± 0,15 1,5 3 6 20
32 41 ± 0,2 1,5 3 6 25
40 50 ± 0,2 2 3 8 32
50 61 ± 0,2 2 3 8 40
63 76 ± 0,3 2,5 3 8 50
75 90 ± 0,3 2,5 3 8 65
90 108 ± 0,3 3 5 10 80
110 131 ± 0,3 3 5 11 100
125 148 ± 0,4 3 5 11 125
140 165 ± 0,4 4 5 11 125
160 188 ± 0,4 4 5 11 150
See Figure 14.
a
Socket dimensions and tolerances shall conform to ISO 1452-2.

6.6.2 Flanges
The nominal pressure, PN, of a flange shall be not less than the PN of the connecting pipe.
The flange dimensions shown in Figure 15 shall conform to the req
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