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 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 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: - water mains and services buried in the ground; - conveyance of water above ground for both outside and inside buildings; - 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. It is also applicable to components for the conveyance of water and waste water up to and including 45 °C.

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

L'ISO 1452-3:2009 spécifie les caractéristiques des raccords en poly(chlorure de vinyle) non plastifié (PVC‑U) pour les systèmes de canalisations destinés à l'alimentation en eau et pour les collecteurs d'assainissement enterrés et aériens avec pression. Elle spécifie également les paramètres d'essai pour les méthodes d'essai auxquelles il y est fait référence. Conjointement à l'ISO 1452-1, à l'ISO 1452-2, à l'ISO 1452-4 et à l'ISO 1452-5, elle s'applique aux raccords en PVC U et à leurs assemblages avec des composants en PVC‑U, ou en d'autres matériaux, plastiques ou non plastiques, destinés à être utilisées dans: — conduites principales et branchements enterrés; — transport de l'eau en aérien, à l'extérieur et à l'intérieur des bâtiments; — collecteurs d'assainissement enterrés et aériens avec pression. L'ISO 1452-3:2009 s'applique aux systèmes de canalisations destinés à l'alimentation en eau sous pression jusqu'à 25 °C (eau froide) compris, destinée à la consommation humaine et pour les besoins généraux aussi bien que les eaux usées sous pression. Elle s'applique également aux composants pour le transport de l'eau et des eaux usées jusqu'à 45 °C inclus.

General Information

Status
Published
Publication Date
30-Nov-2009
Current Stage
9093 - International Standard confirmed
Start Date
26-Sep-2014
Completion Date
09-Oct-2019
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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
---------------------- Page: 1 ----------------------
ISO 1452-3:2009(E)
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ii © ISO 2009 – All rights reserved
---------------------- Page: 2 ----------------------
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 2009 – All rights reserved iii
---------------------- Page: 3 ----------------------
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
---------------------- Page: 4 ----------------------
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.
© ISO 2009 – All rights reserved v
---------------------- Page: 5 ----------------------
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 2009 – All rights reserved 1
---------------------- Page: 6 ----------------------
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
---------------------- Page: 7 ----------------------
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
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 2009 – All rights reserved 3
---------------------- Page: 8 ----------------------
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

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
---------------------- Page: 9 ----------------------
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.
a) 90° elbows, 90° tees (see Table 1): Z=+1 (1)
d α
b) 45° elbows (see Table 1): Z=+tan 1 (2)
d α
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
Z=+tan 1 (4)
d) bends (see Table 2) Z = r = 2d (5)
e) short bends (see Table 5) Z = r = 0,75d (6)
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

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.

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 2009 – All rights reserved 5
---------------------- Page: 10 ----------------------
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
20 11 ± 1 5 ± 1 11 ± 1 27 ± 3 6 3 ± 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
---------------------- Page: 11 ----------------------
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
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
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
See Figure 2.
Figure 3 — Bends made from pipes
© ISO 2009 – All rights reserved 7
---------------------- Page: 12 ----------------------
ISO 1452-3:2009(E)

Table 3 — Calculated minimum bend radii and minimum design lengths for bends made from pipes

Dimensions in millimetres
Nominal Minimum Minimum design length
diameter bend radius Z
d, min
Angle, α
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.
Z is calculated using Equation (9):
d, min
Z = (3,5d × tan ) + 0,4d . (9)
d, min n n
r is calculated using Equation (10):
min
r = 3,5d . (10)
min n
8 © ISO 2009 – All rights reserved
---------------------- Page: 13 ----------------------
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
Nominal Minimum Minimum design length
diameter bend radius Z
d, min
Angle α
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.
Z is calculated using Equation (11):
d, min
Z = (2,5d × tan ) + 0,25d . (11)
d, min n n
r is calculated using Equation (12):
min
r = 2,5d . (12)
min n
© ISO 2009 – All rights reserved 9
---------------------- Page: 14 ----------------------
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
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
---------------------- Page: 15 ----------------------
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 2009 – All rights reserved 11
---------------------- Page: 16 ----------------------
ISO 1452-3:2009(E)

Table 7 — Calculated Z-lengths and recommended deviations for reducing bushes, short

Dimensions in millimetres
Nominal Calculated Z-lengths
socket
Nominal diameter of spigot
diameter
d 12 16 20 25 32 40 50 63 75 90 110 125 140 160 180 200 225 250 280 315
12 — 2 4
...

DRAFT INTERNATIONAL STANDARD ISO/DIS 1452-3
ISO/TC 138/SC 2 Secretariat: SNV
Voting begins on: Voting terminates on:
2008-07-03 2008-12-03

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

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'adduction d'eau, pour le drainage enterré et en surface, et pour

le réseau d'égout sous pression — Poly(chlorure de vinyle) non plastifié (PVC-U) —

Partie 3: Raccords et assemblages
(Revision of ISO 4422-3:1996)
ICS 23.040.20; 23.040.45; 91.140.60; 93.025
ISO/CEN PARALLEL ENQUIRY

This draft International Standard is a draft standard developed within the European Committee for

Standardization (CEN) and processed under the CEN-lead mode of collaboration as defined in the

Vienna Agreement. The document has been transmitted by CEN to ISO for circulation for ISO member

body voting in parallel with CEN enquiry. Comments received from ISO member bodies, including those

from non-CEN members, will be considered by the appropriate CEN technical body. Should this DIS be

accepted, a final draft, established on the basis of comments received, will be submitted to a parallel two-

month FDIS vote in ISO and formal vote in CEN.

In accordance with the provisions of Council Resolution 15/1993 this document is circulated in

the English language only.

Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué

en version anglaise seulement.

To expedite distribution, this document is circulated as received from the committee secretariat.

ISO Central Secretariat work of editing and text composition will be undertaken at publication

stage.

Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au

Secrétariat central de l'ISO au stade de publication.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE

REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT

INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO

WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.

RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH

THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
International Organization for Standardization, 2008
---------------------- Page: 1 ----------------------
ISO/DIS 1452-3
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Violators may be prosecuted.
ii ISO 2008 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DIS 1452-3:2008
Contents Page

Foreword ................................................................................................................................................v

Introduction...........................................................................................................................................vi

1 Scope..............................................................................................................................................1

2 Normative references ....................................................................................................................2

3 Terms and definitions, symbols and abbreviations...................................................................2

3.1 Definitions .....................................................................................................................................3

3.2 Symbols ........................................................................................................................................3

4 Material ...........................................................................................................................................3

4.1 Fitting material ..............................................................................................................................3

4.2 Density..........................................................................................................................................3

4.3 MRS-value ....................................................................................................................................3

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

6.3.1 Socket and spigot dimensions....................................................................................................4

6.3.2 Diameters, laying lengths, bend radii and angles.......................................................................5

6.4 Adapter fittings............................................................................................................................13

6.4.1 Designation of adapter fittings ..................................................................................................13

6.4.2 Reinforcement of adapter fittings..............................................................................................13

6.4.3 Dimensions of adapter fittings ..................................................................................................14

6.5 Tapping saddles .........................................................................................................................15

6.6 Flange adapters and flanges ......................................................................................................19

6.6.1 Adapters for backing flange......................................................................................................19

6.6.2 Flanges .....................................................................................................................................20

6.7 Elastomeric ring seal fittings.......................................................................................................22

6.7.1 Socket and spigot dimensions..................................................................................................22

6.7.2 Minimum depth of engagement for socketed fittings and length of fitting spigots....................22

6.7.3 Diameters, laying lengths, design lengths, bend radii and angles ...........................................24

6.7.4 Wall thicknesses.......................................................................................................................33

6.8 End-load-bearing double-sockets with elastomeric seals ..........................................................33

7 Classification and operating conditions ...................................................................................33

7.1 Classification...............................................................................................................................33

7.2 Selection of nominal pressure PN and pipe series S for water up to and including 25 °C.........34

7.3 Determination of the allowable operating pressure PFA for water up to 45 °C..........................34

8 Mechanical characteristics.........................................................................................................34

8.1 Resistance to internal pressure of fittings or parts of fittings......................................................34

© ISO 2008 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/DIS 1452-3:2008

8.2 Crushing test.............................................................................................................................. 35

9 Physical characteristics ............................................................................................................. 35

10 Sealing rings................................................................................................................................ 36

11 Adhesives.................................................................................................................................... 36

12 Performance requirements ........................................................................................................ 37

13 Marking......................................................................................................................................... 37

13.1 General...................................................................................................................................... 37

13.2 Minimum required marking ........................................................................................................ 37

13.3 Additional marking ..................................................................................................................... 38

Annex A (normative) Imperial(inch)-sized fittings........................................................................... 39

A.1 General ...................................................................................................................................... 39

A.2 Nominal sizes and pressure classes ......................................................................................... 39

A.2.1 Nominal sizes........................................................................................................................... 39

A.2.2 Pressure classes...................................................................................................................... 39

A.3 Solvent cement type fittings....................................................................................................... 39

A.3.1 Socket and spigot dimensions ................................................................................................. 39

A.3.2 Diameters, laying lengths and other dimensions..................................................................... 39

A.4 Wall thickness for bends made from pipe.................................................................................. 39

A.5 Flanges...................................................................................................................................... 39

A.6 Elastomeric ring seal fittings ...................................................................................................... 40

A.7 Socket and spigot dimensions ................................................................................................... 40

A.8 Minimum depths of engagement for socketed fittings and lengths of fitting spigots ................. 40

A.9 Mechanical characteristics......................................................................................................... 40

Bibliography........................................................................................................................................ 42

iv © ISO 2008 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/DIS 1452-3:2008
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 Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the

transport of fluids, Subcommittee SC 2, and by Technical Committee CEN/TC 155, Plastics piping systems

and ducting systems in collaboration.

This first edition cancels and replaces ISO 4422-3:1996 [1], EN 1452-3:1999 [2], and partly EN 1456-1:2001

[3], which have been technically revised. It also includes and cancels ISO 264:1976 [4], ISO 2045:1988 [5],

ISO 2048:1990 [6], ISO 3460:1975 [7], ISO 4434:1977 [8] and ISO 6455:1983 [9].

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

NOTE For a further part, Part 7: Guidance for the assessment of conformity, CEN/TC 155 intends to revise

ENV 1452-7:2000 [10], that might be published as CEN/TS 1452-7 [11]. It will include CEN/TS 1456-2:2003 [12].

© ISO 2008 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO/DIS 1452-3:2008
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 standard:

1) this standard provides no information as to whether the products may be used without restriction;

2) it should be noted that 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 Part 1,

Part 2 and Part 4 of ISO 1452. Characteristics for fitness for purpose (mainly for joints) are covered in Part 5.

This Part of ISO 1452 covers the characteristics of fittings.

Guidance for installation is given in ISO/TR 4191:1989 [13]. Its revision will include and could replace

ENV 1452-6:2001 [14].

Guidance for assessment of conformity is provided in CEN/TS 1452-7 [11], the revision of which is intended to

include CEN/TS 1456-2:2003 [12].
vi © ISO 2008 – All rights reserved
---------------------- Page: 6 ----------------------
DRAFT INTERNATIONAL STANDARD ISO/DIS 1452-3:2008
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 standard.

In conjunction with Parts 1, 2, and 5 of ISO 1452, 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:

b) water mains and services buried in ground;
c) conveyance of water above ground for both outside and inside buildings;
d) 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 standard 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 given in Annex A of

ISO/DIS 1452-2:2008 applies.

NOTE The possibilities of use for temperatures above 45° C should be defined between the producer and end-user

case by case.

Depending on the jointing method, this standard 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 standard is also applicable to PVC-U flange adapters and to the corresponding flanges made from

various materials.

This standard 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 2008 – All rights reserved 1
---------------------- Page: 7 ----------------------
ISO/DIS 1452-3:2008
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 (EN ISO 580:2005)

ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of

the resistance to internal pressure — Part 1: General method (EN ISO 1167-1:2006)

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 (prEN ISO 1167-3:2007)

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/DIS 1452-1:2008, 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

(prEN ISO 1452-1:2008)

ISO/DIS 1452-2:2008, 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

(prEN ISO 1452-2:2008)

ISO/DIS 1452-5:2008, 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 (prEN ISO 1452-5:2008)

ISO 2507-1, Thermoplastics pipes and fittings — Vicat softening temperature — Part 1: General test method

ISO 2507-2, 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

(EN ISO 3126:2005)

ISO 7686, Plastics pipes and fittings — Determination of opacity (EN ISO 7686:2005)

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 ISO 13783)

EN 802, Plastics piping and ducting systems — Injection-moulded thermoplastics fittings for pressure piping

systems — Test method for maximum deformation by crushing
3 Terms and definitions, symbols and abbreviations

For the purposes of this standard, the terms and definitions, symbols and abbreviations given in

ISO/DIS 1452-1:2008 apply, together with the following.
2 © ISO 2008 – All rights reserved
---------------------- Page: 8 ----------------------
ISO/DIS 1452-3:2008
3.1 Definitions
3.1.1
laying length (Z-length)
a) laying length of fittings and valves with angled outlets:

1) for socketed outlet, the laying length is the distance from the inserted tube or spigot end to the

intersection point of the fitting/valve axis (fitting or valve centre);

2) for spigot outlet, the laying length is the distance from the outlet end to the intersection point of the

fitting/valve axis (fitting or valve centre).
b) laying length of fittings and valves with parallel outlets:

3) in the case of sockets, the laying length is the distance between the ends of the inserted tubes or

spigots;

4) in the case of one socket and one spigot, the laying length is the distance from the inserted tube or

spigot end to the end of the spigot outlet.
3.1.2
design length of bends (Z -length)
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 to be used shall conform to ISO/DIS 1452-1:2008 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 1183-1:2004, shall be between

the following limits:
3 3
1350 kg/m ≤ ρ ≤ 1460 kg/m
4.3 MRS-value

The fitting material shall have a minimum required strength, MRS, as defined in 4.4.1 of ISO/DIS 1452-1:2008.

The manufacturer of the compound/formulation shall confirm the MRS by testing as described in 4.4.1 or 4.4.2

of ISO/DIS 1452-1:2008 respectively.

The MRS value of the fitting material shall be declared by the fitting manufacturer in his technical file.

© ISO 2008 – All rights reserved 3
---------------------- Page: 9 ----------------------
ISO/DIS 1452-3:2008
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

standard.
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

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/DIS 1452-2:2008.

The spigot length(s) shall be at least equal to the corresponding socket length(s).

The tolerance on the diameter of the spigot ends, d , of reducing bushing (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 to 160 mm;
⎯ maximum 0,4 mm for diameters 180 to 225 mm;
⎯ maximum 0,5 mm for diameters 250 to 315 mm.
4 © ISO 2008 – All rights reserved
---------------------- Page: 10 ----------------------
ISO/DIS 1452-3:2008
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 the

following equations as applicable, where α is the angle of the elbow and r is the radius of the bend.

Z= + 1
a) 90° elbows, 90° tees (see Table 1):
Z= tan + 1
b) 45° elbows (see Table 1):
2 2
Z= cot + t
c) 45° tee (see Table 1):
2 2
with d t
≤ 90 3
110 4
125 6
140 6
160 7
Z = tan +1
2 2
d) Bends (see Table 2) Z = r = 2d
e) Short bends (see Table 5) Z = r = 0,75d
f) Reducing bushes long (see Table 6) Z = 0,75 d + 6
g) Reducing bushes short (see Table 7)
d d
⎛ ⎞ ⎛ ⎞
2 1
Z= +6− +6
⎜ ⎟ ⎜ ⎟
2 2
⎝ ⎠ ⎝ ⎠

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).

NOTE The deviation from the calculated values are recommended to be not greater than the values given in the

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 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.

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/DIS 1452-2:2008.

NOTE 2 If needed the next pipe series with the smaller S-number can be used. See also 7.2.

6.3.2.3 Figures and Tables for fittings for solvent cementing.
Types of fittings are shown in Figure 1.
© ISO 2008 – All rights reserved 5
---------------------- Page: 11 ----------------------
ISO/DIS 1452-3:2008
90° elbow 45° elbow 90° tee 45° tee socket
Figure 1 — Types of fittings: Typical elbows, tees and double-socket
6 © ISO 2008 – All rights reserved
---------------------- Page: 12 ----------------------
ISO/DIS 1452-3:2008

Table 1 ― Calculated Z-lengths and recommended deviations for elbows, tees and double-sockets

(see Figure 1)
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
12 7 ±1 3,5 ±1 7 ±1 −− −− 3 ±1
16 9 ±1 4,5 ±1 9 ±1 −− −− 3 ±1
20 11 ±1 5 ±1 11 ±1 27 ±3 6 −1 3 ±1
+1,2 +1,2 +1,2 +2 +1,2
25 13,5 −1 6 −1 13,5 −1 33 ±3 7 −1 3 −1
+1,6 +1,6 +1,6 +4 +2 +1,6
32 17 −1 7,5 −1 17 −1 42 −3 8 −1 3 −1
+2 +2 +2 +5 +2 +2
40 21 −1 9,5 −1 21 −1 51 −3 10 −1 3 −1
+2,5 +2,5 +2,5 +6 +2 +2
50 26 −1 11,5 −1 26 −1 63 −3 12 −1 3 −1
+3,2 +3,2 +3,2 +7 +2 +2
63 32,5 −1 14 −1 32,5 −1 79 −3 14 −1 3 −1
+4 +4 +4 +9 +2 +2
75 38,5 −1 16,
...

NORME ISO
INTERNATIONALE 1452-3
Première édition
2009-12-01
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
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
Numéro de référence
ISO 1452-3:2009(F)
ISO 2009
---------------------- Page: 1 ----------------------
ISO 1452-3:2009(F)
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ii © ISO 2009 – Tous droits réservés
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ISO 1452-3:2009(F)
Sommaire Page

Avant-propos .....................................................................................................................................................iv

Introduction.........................................................................................................................................................v

1 Domaine d'application ..........................................................................................................................1

2 Références normatives.........................................................................................................................2

3 Termes, définitions, symboles et abréviations ..................................................................................3

3.1 Termes et définitions ............................................................................................................................3

3.2 Symboles................................................................................................................................................3

4 Matière ....................................................................................................................................................3

4.1 Matière des raccords.............................................................................................................................3

4.2 Masse volumique...................................................................................................................................4

4.3 Valeur MRS.............................................................................................................................................4

5 Caractéristiques générales...................................................................................................................4

5.1 Aspect.....................................................................................................................................................4

5.2 Couleur ...................................................................................................................................................4

5.3 Opacité des raccords pour le transport de l'eau en aérien...............................................................4

6 Caractéristiques géométriques............................................................................................................4

6.1 Mesurage des dimensions....................................................................................................................4

6.2 Diamètres nominaux .............................................................................................................................4

6.3 Raccords à coller...................................................................................................................................5

6.4 Raccords d'adaptation........................................................................................................................13

6.5 Selles de branchements .....................................................................................................................15

6.6 Collets et brides...................................................................................................................................18

6.7 Raccords à bague d'étanchéité en élastomère ................................................................................21

6.8 Doubles manchons à bague d'étanchéité supportant l'effet de fond ............................................30

7 Classification et conditions de service .............................................................................................30

7.1 Classification .......................................................................................................................................30

7.2 Sélection de la pression nominale PN et les séries de tube S pour de l'eau jusqu'à 25 °C

inclus ....................................................................................................................................................31

7.3 Détermination de la pression de service admissible PFA pour l'eau jusqu'à 45 °C.....................31

8 Caractéristiques mécaniques ............................................................................................................31

8.1 Résistance à la pression interne des raccords ou composants de raccords...............................31

8.2 Essai d'écrasement .............................................................................................................................32

9 Caractéristiques physiques ...............................................................................................................32

10 Bagues d'étanchéité............................................................................................................................33

11 Adhésifs................................................................................................................................................33

12 Exigences de performance.................................................................................................................34

13 Marquage..............................................................................................................................................34

13.1 Généralités ...........................................................................................................................................34

13.2 Marquage minimal exigé.....................................................................................................................34

13.3 Marquage supplémentaire..................................................................................................................35

Annexe A (normative) Raccords en dimensions impériales (en pouces)...................................................36

Bibliographie.....................................................................................................................................................39

© ISO 2009 – Tous droits réservés iii
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ISO 1452-3:2009(F)
Avant-propos

L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de

normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiée

aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du

comité technique créé à cet effet. Les organisations internationales, gouvernementales et non

gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec

la Commission électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.

Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI,

Partie 2.

La tâche principale des comités techniques est d'élaborer les Normes internationales. Les projets de Normes

internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur

publication comme Normes internationales requiert l'approbation de 75 % au moins des comités membres

votants.

L'attention est appelée sur le fait que certains des éléments du présent document peuvent faire l'objet de

droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable de ne

pas avoir identifié de tels droits de propriété et averti de leur existence.

L'ISO 1452-3 a été élaborée par le comité technique ISO/TC 138, Tubes, raccords et robinetterie en matières

plastiques pour le transport des fluides, sous-comité SC 2, Tubes et raccords en matières plastiques pour

adduction et distribution d'eau, et par le Comité Technique CEN/TC 155, Systèmes de canalisations et de

gaines en plastiques.

Cette première édition annule et remplace l'ISO 4422-3:1996, l'ISO 264:1976, l'ISO 264:1976/Add.1:1982,

l'ISO 2045:1988, l'ISO 2048:1990, l'ISO 3460:1975, l'ISO 4434:1977 et l'ISO 6455:1983, qui ont fait l'objet

d'une révision technique.

L'ISO 1452 comprend les parties suivantes, présentées sous le titre général 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 1: Généralités
⎯ Partie 2: Tubes
⎯ Partie 3: Raccords
⎯ Partie 4: Robinets
⎯ Partie 5: Aptitude à l'emploi du système

Directives pour l'évaluation de la conformité est le titre de ce qui sera une future Partie 7.

iv © ISO 2009 – Tous droits réservés
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ISO 1452-3:2009(F)
Introduction

La norme de système, dont ceci est la Partie 3, spécifie les exigences pour un système de canalisations et

ses composants en poly(chlorure de vinyle) non plastifié (PVC-U). Le système de canalisations est destiné à

être utilisé pour l'alimentation en eau et pour les collecteurs d'assainissement enterrés et aériens avec

pression.

Pour ce qui concerne les éventuels effets défavorables des produits visés par la présente partie de l'ISO 1452

sur la qualité des eaux destinées à la consommation humaine:

a) la présente partie de l'ISO 1452 ne fournit aucune information sur la possibilité d'utiliser le produit sans

restriction;

b) les réglementations nationales existantes concernant l'utilisation et/ou les caractéristiques de ces

produits restent en vigueur.

Les exigences et les méthodes d'essai pour les composants sont spécifiées dans l'ISO 1452-1, l'ISO 1452-2

et l'ISO 1452-4. Les caractéristiques d'aptitude à l'emploi sont couvertes par l'ISO 1452-5.

La présente partie de l'ISO 1452 couvre les caractéristiques des raccords.
[1]
Des directives pour l'installation sont données dans l'ISO/TR 4191 .
[2]

Des directives pour l'évaluation de la conformité sont données dans l'ENV 1452-7 .

Par commodité pour les utilisateurs de la présente partie de l'ISO 1452, le marquage des raccords et des

brides selon des Normes internationales annulées (par exemple ISO 4422-3:1996) peut être considéré

valable pendant une période, par exemple jusqu'à trois ans à partir de la publication de la présente partie de

l'ISO 1452.
© ISO 2009 – Tous droits réservés v
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NORME INTERNATIONALE ISO 1452-3:2009(F)
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
1 Domaine d'application

La présente partie de l'ISO 1452 spécifie les caractéristiques des raccords en poly(chlorure de vinyle) non

plastifié (PVC-U) pour les systèmes de canalisations destinés à l'alimentation en eau et pour les collecteurs

d'assainissement enterrés et aériens avec pression.

Elle spécifie également les paramètres d'essai pour les méthodes d'essai auxquelles il est fait référence dans

la présente partie de l'ISO 1452.

Conjointement à l'ISO 1452-1, à l'ISO 1452-2, à l'ISO 1452-4 et à l'ISO 1452-5, elle s'applique aux raccords

en PVC-U et à leurs assemblages avec des composants en PVC-U, ou en d'autres matériaux, plastiques ou

non plastiques, destinés à être utilisées dans:
a) conduites principales et branchements enterrés;
b) transport de l'eau en aérien, à l'extérieur et à l'intérieur des bâtiments;
c) collecteurs d'assainissement enterrés et aériens avec pression.

Elle s'applique aux systèmes de canalisations destinés à l'alimentation en eau sous pression jusqu'à 25 °C

(eau froide) compris, destinée à la consommation humaine et pour les besoins généraux aussi bien que les

eaux usées sous pression.

La présente partie de l'ISO 1452 s'applique également aux composants pour le transport de l'eau et des eaux

usées jusqu'à 45 °C inclus. Pour les températures entre 25 °C et 45 °C, l'ISO 1452-2:2009, Figure A.1,

s'applique.

NOTE 1 Les possibilités d'utilisation pour les températures supérieures à 45 °C peuvent faire l'accord entre le fabricant

et l'utilisateur final au cas par cas.

En fonction de la méthode d'assemblage, la présente partie de l'ISO 1452 s'applique aux types de raccords

suivants:
⎯ raccords à coller;
⎯ raccords à bague d'étanchéité en élastomère.

Les raccords PVC-U peuvent être fabriqués par moulage à injection et/ou façonnés à partir de tubes.

© ISO 2009 – Tous droits réservés 1
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ISO 1452-3:2009(F)

La présente partie de l'ISO 1452 s'applique aussi aux brides d'adaptation en PVC-U et aux brides

correspondantes fabriquées à partir de matières variées.

La présente partie de l'ISO 1452 concerne une série de dimensions de tubes et de classes de pression et

donne des exigences pour les couleurs.

NOTE 2 Il incombe à l'acheteur ou au rédacteur des spécifications de faire le choix approprié à partir de ces éléments

en tenant compte de leurs exigences particulières, des éventuelles réglementations nationales et des usages pour

l'installation ou des codes.
2 Références normatives

Les documents de référence suivants sont indispensables pour l'application du présent document. Pour les

références datées, seule l'édition citée s'applique. Pour les références non datées, la dernière édition du

document de référence s'applique (y compris les éventuels amendements).

ISO 7-1:1994, Filetages de tuyauterie pour raccordement avec étanchéité dans le filet — Partie 1: Dimensions,

tolérances et désignation

ISO 580, Systèmes de canalisations et de gaines en plastiques — Raccords thermoplastiques moulés par

injection — Méthodes d'essai pour estimer visuellement les effets de la chaleur

ISO 1167-1, Tubes, raccords et assemblages en matières thermoplastiques pour le transport des fluides —

Détermination de la résistance à la pression interne — Partie 1: Méthode générale

ISO 1167-3, Tubes, raccords et assemblages en matières thermoplastiques pour le transport des fluides —

Détermination de la résistance à la pression interne — Partie 3: Préparation des composants

ISO 1183-1:2004, Plastiques — Méthodes de détermination de la masse volumique des plastiques non

alvéolaires — Partie 1: Méthode par immersion, méthode du pycnomètre en milieu liquide et méthode par

titrage

ISO 1452-1:2009, 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 1: Généralités

ISO 1452-2:2009, 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 2: Tubes

ISO 1452-5, 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 5: Aptitude à l'emploi du système

ISO 2507-1:1995, Tubes et raccords en matières thermoplastiques — Température de ramollissement

Vicat — Partie 1: Méthode générale d'essai

ISO 2507-2:1995, Tubes et raccords en matières thermoplastiques — Température de ramollissement

Vicat — Partie 2: Conditions particulières d'essai pour tubes et raccords en poly(chlorure de vinyle) non

plastifié (PVC-U) ou en poly(chlorure de vinyle) chloré (PVC-C) et tubes en poly(chlorure de vinyle) à

résistance au choc améliorée (PVC-HI)

ISO 3126, Systèmes de canalisations en plastiques — Composants en plastiques — Détermination des

dimensions
ISO 7686, Tubes et raccords en matières plastiques — Détermination de l'opacité
2 © ISO 2009 – Tous droits réservés
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ISO 1452-3:2009(F)

ISO 13783, Systèmes de canalisations en plastiques — Double manchon en poly(chlorure de vinyle) non

plastifié (PVC-U) résistant à la traction axiale — Méthode d'essai d'étanchéité et de résistance en traction,

avec sollicitation en flexion et pression interne

EN 802, Systèmes de canalisations et de gaines en plastiques — Raccords thermoplastiques moulés par

injection pour canalisations avec pression — Méthode d'essai de déformation maximale par écrasement

3 Termes, définitions, symboles et abréviations

Pour les besoins du présent document, les termes, définitions, symboles et abréviations donnés dans

l'ISO 1452-1 s'appliquent ainsi que les suivants.
3.1 Termes et définitions
3.1.1
longueur de montage
longueur Z

〈orifice avec emboîture〉 distance de l'extrémité du tube ou du bout mâle mis en place jusqu'au point

d'intersection des axes du robinet/du raccord (centre du raccord ou du robinet)
3.1.2
longueur de montage
longueur Z

〈orifice mâle〉 distance de l'extrémité de l'orifice jusqu'au point d'intersection des axes du robinet/du raccord

(centre du raccord ou du robinet)
3.1.3
longueur de montage
longueur Z

〈emboîtures avec orifices parallèles〉 distance entre les extrémités des tubes ou des bouts mâles mis en place

3.1.4
longueur de montage
longueur Z

〈emboîture et orifice mâle〉 distance de l'extrémité du tube ou du bout mâle mis en place jusqu'à l'extrémité de

l'orifice mâle
3.1.5
longueur de conception des courbes
longueur Z

longueur d'un orifice, excluant toute la longueur d'emboîture ou d'assemblage d'un bout mâle

3.2 Symboles
Z longueur de montage (longueur Z)
Z longueur de conception Z (longueur Z )
d d
r rayon de courbure
4 Matière
4.1 Matière des raccords

La matière à utiliser doit être conforme à l'ISO 1452-1 et aux exigences données en 4.2 et en 4.3.

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ISO 1452-3:2009(F)
4.2 Masse volumique

La masse volumique, ρ, à 23 °C du tube, mesurée selon l'ISO 1183-1, doit se situer entre les limites

suivantes:
3 3
1 350 kg/m u ρ u 1 460 kg/m
4.3 Valeur MRS

La matière du raccord doit avoir une résistance minimale requise (MRS), telle qu'elle est définie dans

l'ISO 1452-1:2009, 4.4.1.

Le fabricant du composant/de la formulation doit confirmer la MRS en effectuant des essais comme décrit

respectivement dans l'ISO 1452-1:2009, 4.4.1, 4.4.2 ou 4.4.3.

La valeur MRS de la matière du raccord doit être déclarée par le fabricant du raccord dans son dossier

technique.
5 Caractéristiques générales
5.1 Aspect

À l'examen sans grossissement, les surfaces internes et externes des tubes doivent être lisses, propres et

exemptes de rainures, cavités et autres défauts de surface susceptibles d'empêcher de satisfaire à la

présente partie de l'ISO 1452.
Chaque extrémité d'un raccord doit être perpendiculaire à son axe.
5.2 Couleur

La couleur des raccords moulés par injection doit être grise sur toute la paroi pour l'alimentation en eau et

grise ou brune pour les collecteurs d'assainissement avec pression.

La couleur des raccords fabriqués à partir de tubes doit être grise, bleue ou crème tout au long de la paroi

pour l'alimentation en eau, et grise ou brune pour les collecteurs d'assainissement avec pression.

5.3 Opacité des raccords pour le transport de l'eau en aérien

La paroi des raccords doit être opaque et ne doit pas transmettre plus de 0,2 % de lumière visible mesurée

conformément à l'ISO 7686.
6 Caractéristiques géométriques
6.1 Mesurage des dimensions
Les dimensions doivent être mesurées conformément à l'ISO 3126.
6.2 Diamètres nominaux

Le(s) diamètre(s) nominal(ux), d , d'un raccord doit(vent) correspondre au(x),et être désigné(s) par le(s)

diamètre(s) extérieur(s) nominal(ux) du (des) tube(s) au(x)quel(s) il(s) est (sont) destiné(s).

4 © ISO 2009 – Tous droits réservés
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ISO 1452-3:2009(F)
6.3 Raccords à coller
6.3.1 Dimensions de l'emboîture et du bout mâle

Les dimensions de l'emboîture des raccords doivent être les mêmes que pour les emboîtures des tubes, et

doivent être conformes à l'ISO 1452-2.

La(es) longueur(s) du(es) bout(s) mâle(s) doi(ven)t être au moins égale(s) à la(aux) longueur(s) de(s)

emboîture(s) correspondante(s).

La tolérance sur le diamètre des bouts mâles, d , des mamelons de réduction (voir Tableau 7) doit toujours

être positive et comme suit:
⎯ maximum de 0,2 mm pour les diamètres égaux ou inférieurs à 90 mm;
⎯ maximum de 0,3 mm pour les diamètres 110 mm à 160 mm;
⎯ maximum de 0,4 mm pour les diamètres 180 mm à 225 mm;
⎯ maximum de 0,5 mm pour les diamètres 250 mm à 315 mm.
6.3.2 Diamètres, longueurs de montage, rayon de courbures et angles

6.3.2.1 Pour les types suivants de raccords moulés par injection, les longueurs Z doivent être calculées

en utilisant une des Équations (1) à (8) suivantes le cas échant, où α est l'angle du coude et r est le rayon des

courbes.
a) coudes à 90°, 90° tés (voir Tableau 1): Z=+1 (1)
d α
b) coudes à 45° (voir le Tableau 1): Z=+tan 1 (2)
d α
c) tés à 45° (voir Tableau 1): Z=+cot t (3)
avec d u 90, 110, 125, 140, 160 et t = 3, 4, 6, 6, 7
Z=+tan 1 (4)
d) courbes (voir Tableau 2) Z = r = 2d (5)
e) courbes courtes (voir Tableau 5) Z = r = 0,75d (6)
f) mamelons de réduction, longs (voir Tableau 6) Z = 0,75 d + 6 (7)
⎛⎞dd⎛ ⎞
g) mamelons de réduction, courts (voir Tableau 7) Z=+66− + (8)
⎜⎟⎜ ⎟
⎝⎠⎝ ⎠

Les valeurs calculées sont données dans les Tableaux 1 à 7. Les valeurs calculées peuvent être adaptées

par le fabricant.

Les fabricants doivent indiquer (par exemple dans leur catalogue) les valeurs exactes des longueurs Z.

© ISO 2009 – Tous droits réservés 5
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ISO 1452-3:2009(F)

Il est recommandé que les écarts par rapport aux valeurs calculées ne soient pas supérieurs aux valeurs des

Tableaux 1, 2, 5, 6 et 7, selon le cas.

6.3.2.2 Pour les courbes réalisées à partir des tubes, les longueurs de conception Z, Z , et les rayons de

courbure doivent être égaux ou supérieurs aux valeurs données dans les Tableaux 3 et 4, selon le cas.

NOTE 1 Les longueurs Z sont toujours supérieures aux longueurs d'emboîtures correspondantes.

Les courbes réalisées à partir de tubes ne doivent pas avoir une épaisseur de paroi dans la zone de courbure

qui soit inférieure à l'épaisseur minimale de paroi pour le tube correspondant spécifiée dans l'ISO 1452-2.

NOTE 2 Si nécessaire, il est possible d'utiliser la série de tubes suivante avec un numéro S inférieur. Voir aussi 7.2.

6.3.2.3 Les figures et tableaux suivants donnent les raccords à coller.
Les types de raccords sont représentés à la Figure 1.
a) coude à 90° b) coude à 45° c) té à 90° d) té à 45° e) emboîture
Figure 1 — Types de raccords: Coudes, tés et double manchon types
6 © ISO 2009 – Tous droits réservés
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ISO 1452-3:2009(F)

Tableau 1 — Longueurs Z calculées et écarts recommandés pour les coudes, tés et doubles

manchons
Dimensions en millimètres
Diamètre Longueur Z calculée et écarts recommandés
nominal
Type de raccord
Coude 90° Coude 45° Té 90° Té 45° Double
manchon
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
20 11 ± 1 5 ± 1 11 ± 1 27 ± 3 6 3 ± 1
+1,2 +1,2 +1,2 +2 +1,2
25 13,5 6 13,5 33 ± 3 7 3
−1 −1 −1 −1
+1,6 +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
−3 −1 −1
−1 −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
Voir Figure 1.
Figure 2 — Courbes moulées par injection
© ISO 2009 – Tous droits réservés 7
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ISO 1452-3:2009(F)

Tableau 2 — Longueurs Z calculées et écarts recommandés pour les courbes, moulées par injection

Dimensions en millimètres
Longueurs Z calculées et écarts recommandés
Diamètre nominal d
12 16 20 25 32 40 50
+1,2 +1,6 +2,5
24 ± 1 32 ± 1 40 ± 1 50 64 80 100
−1 −1 −1
Diamètre nominal d
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
Voir Figure 2.
Figure 3 — Courbes réalisées à partir de tubes
8 © ISO 2009 – Tous droits réservés
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ISO 1452-3:2009(F)

Tableau 3 — Rayons de courbure minimaux calculés et longueurs de conception minimales des

courbes réalisées à partir de tubes
Dimensions in millimètres
Diamètre Rayon de Longueur de conception minimale
nominal courbure Z
d,min
minimale
Angle (α)
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
Voir Figure 3.
Z est calculé en utilisant l'Équation (9): Z = (3,5d × tan ) + 0,4d .
d,min d,min n n
r est calculé en utilisant l'Équation (10): r = 3,5d .
min min n
Figure 4 — Courbures courtes réalisées à partir de tubes
© ISO 2009 – Tous droits réservés 9
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ISO 1452-3:2009(F)

Tableau 4 — Rayons de courbure minimaux calculés et longueurs de conception minimales des

courbures courtes réalisées à partir de tubes
Dimensions en millimètres
Diamètre Rayon de Longueur de conception minimale
nominal courbure Z
d,min
minimale
Angle (α)
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
Voir Figure 4.
Z est calculé en utilisant l'Équation (11): Z =
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