ISO 19220:2021
(Main)Plastics piping systems for soil and waste discharge (low and high temperature) inside buildings — Styrene copolymer blends (SAN + PVC)
Plastics piping systems for soil and waste discharge (low and high temperature) inside buildings — Styrene copolymer blends (SAN + PVC)
This document specifies the requirements for solid-wall styrene copolymer blend (SAN + PVC) pipes and fittings for soil and waste discharge (low and high temperature) above ground inside buildings, and for the system itself. It does not include buried pipework. It also specifies the test parameters for the test methods referred to within this document. This document is applicable to SAN + PVC pipes and fittings, as well as assemblies of such pipes and fittings, intended to be used for the following purposes: a) soil and waste discharge pipework for the conveyance of domestic waste waters (low and high temperature); b) ventilation pipework associated with a); c) rainwater pipework inside the building. This document is applicable to pipes and fittings designed for jointing by means of elastomeric sealing rings, solvent cementing or integral dual-purpose sockets, i.e. for elastomeric ring seal joints and/or for solvent cement joints.
Systèmes de canalisations en plastique pour l'évacuation des eaux-vannes et des eaux usées (à basse et à haute température) à l'intérieur des bâtiments — Mélanges de copolymères de styrène (SAN + PVC)
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 19220
Second edition
2021-07
Plastics piping systems for soil
and waste discharge (low and high
temperature) inside buildings —
Styrene copolymer blends (SAN + PVC)
Systèmes de canalisations en plastique pour l'évacuation des
eaux-vannes et des eaux usées (à basse et à haute température) à
l'intérieur des bâtiments — Mélanges de copolymères de styrène (SAN
+ PVC)
Reference number
ISO 19220:2021(E)
©
ISO 2021
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ISO 19220:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 19220:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 2
3.1 Symbols . 2
3.2 Abbreviated terms . 3
4 Material . 3
4.1 SAN + PVC compound . 3
4.2 Reprocessable and recyclable material . 3
4.3 Sealing ring retaining means . 3
4.4 Fire behaviour . 3
5 General characteristics . 3
5.1 Appearance . 3
5.2 Colour . 4
6 Geometrical characteristics . 4
6.1 General . 4
6.2 Dimensions of pipes . 4
6.2.1 Outside diameters . 4
6.2.2 Effective length of pipes . . 5
6.2.3 Chamfering . 5
6.2.4 Wall thickness . 5
6.3 Dimensions of fittings . 7
6.3.1 Outside diameters . 7
6.3.2 z-lengths . 7
6.3.3 Wall thickness . 7
6.4 Dimensions of sockets and pipe ends . 8
6.4.1 Classification and designation of sockets . 8
6.4.2 Dimensions of ring seal sockets and spigot ends . 9
6.4.3 Dimensions of solvent cement sockets and spigot ends .13
6.5 Types of fitting.14
7 Mechanical characteristics of pipes .22
7.1 General characteristics .22
7.2 Additional characteristics .23
8 Physical characteristics .24
8.1 Physical characteristics of pipes .24
8.2 Physical characteristics of fittings .24
9 Performance requirements .25
10 Sealing rings .25
11 Adhesives .25
12 Marking .26
12.1 General .26
12.2 Minimum required marking of pipes .26
12.3 Minimum required marking of fittings .26
13 Installation of piping systems .27
Annex A (informative) Additional characteristics of (SAN + PVC) pipes and fittings .28
Bibliography .29
© ISO 2021 – All rights reserved iii
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ISO 19220:2021(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 1, Plastics pipes and fittings for soil, waste and drainage (including
land drainage).
This second edition cancels and replaces the first edition (ISO 19220:2004), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— references to EN standards have been changed to references to ISO standards;
— Introduction has been deleted;
— symbols have been modified.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
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INTERNATIONAL STANDARD ISO 19220:2021(E)
Plastics piping systems for soil and waste discharge
(low and high temperature) inside buildings — Styrene
copolymer blends (SAN + PVC)
1 Scope
This document specifies the requirements for solid-wall styrene copolymer blend (SAN + PVC) pipes
and fittings for soil and waste discharge (low and high temperature) above ground inside buildings,
and for the system itself. It does not include buried pipework.
It also specifies the test parameters for the test methods referred to within this document.
This document is applicable to SAN + PVC pipes and fittings, as well as assemblies of such pipes and
fittings, intended to be used for the following purposes:
a) soil and waste discharge pipework for the conveyance of domestic waste waters (low and high
temperature);
b) ventilation pipework associated with a);
c) rainwater pipework inside the building.
This document is applicable to pipes and fittings designed for jointing by means of elastomeric sealing
rings, solvent cementing or integral dual-purpose sockets, i.e. for elastomeric ring seal joints and/or for
solvent cement joints.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 2505, Thermoplastics pipes — Longitudinal reversion — Test method and parameters
ISO 2507-1, Thermoplastics pipes and fittings — Vicat softening temperature — Part 1: General test method
ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
ISO 3127, Thermoplastics pipes — Determination of resistance to external blows — Round-the-clock
method
ISO 4633, Rubber seals — Joint rings for water supply, drainage and sewerage pipelines — Specification for
materials
ISO 8361-1, Thermoplastics pipes and fittings — Water absorption — Part 1: General test method
ISO 13254, Thermoplastics piping systems for non-pressure applications — Test method for watertightness
ISO 13255, Thermoplastics piping systems for soil and waste discharge inside buildings — Test method for
airtightness of joints
ISO 13257, Thermoplastics piping systems for non-pressure applications — Test method for resistance to
elevated temperature cycling
EN 681-2, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 2: Thermoplastic elastomers
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ISO 19220:2021(E)
EN 1411, Plastics piping and ducting systems - Thermoplastics pipes - Determination of resistance to
external blows by the staircase method
3 Terms, definitions, symbols and abbreviated terms
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 Symbols
d outside diameter (at any point)
e
d mean outside diameter
em
d nominal outside diameter
n
d inside diameter of the socket
s
d mean inside diameter of the socket
sm
DN nominal size
DN/OD nominal size (outside-diameter related)
e wall thickness (at any point)
e mean wall thickness (e )
m s
e wall thickness of the socket
s
e wall thickness at the groove
g
l depth of sealing zone
sz
l effective insertion depth
eff
L length of solvent cement socket
c
L length of engagement
e
L length of lead-in
l
L effective length of a pipe
p
L length of spigot
sp
L design length (z-length) of a fitting
z
R radius of swept fittings z
α nominal angle of a fitting
H drop height for 50 % failure
50
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ISO 19220:2021(E)
3.2 Abbreviated terms
PVC poly (vinyl chloride)
SAN styrene-acrylonitrile
SAN + PVC styrene copolymer blends
TIR true impact rate
VST vicat softening temperature
4 Material
4.1 SAN + PVC compound
The compound for pipes and fittings shall be a styrene copolymer blend consisting of SAN and PVC
to which may be added those additives that are needed to facilitate the manufacture of components
conforming to the requirements of this document.
Other additives may be used in order to conform to national requirements on fire regulations.
Fabricated fittings or parts of fabricated fittings shall be made from pipes and/or mouldings
conforming to this document, except for the requirements for wall thickness of fabricated fittings and/
or mouldings made from SAN + PVC, which conform to the respective material, mechanical and physical
characteristics as required in this document.
NOTE Material conforming to this requirement generally contains 40 % to 60 % of SAN.
4.2 Reprocessable and recyclable material
In addition to virgin material, the use of reprocessable material obtained during the production and
testing of products conforming to this document is permitted. External reprocessable or recyclable
material shall not be used.
4.3 Sealing ring retaining means
Sealing rings may be retained using means made from plastics other than SAN + PVC, provided the
joints conform to the requirements given in Clause 9.
4.4 Fire behaviour
No specific requirements are set by this document for fire behaviour. Attention is drawn to the need to
acknowledge any relevant national regulations in this respect.
5 General characteristics
5.1 Appearance
When viewed without magnification, the following requirements shall be met:
— the internal and external surfaces of pipes and fittings shall be smooth, clean and free from grooving,
blistering, impurities, pores or any other surface irregularity likely to prevent conformity of pipes
and fittings to this document;
— each end of a pipe or fitting shall be cleanly cut, if applicable, and shall be square to its axis.
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ISO 19220:2021(E)
5.2 Colour
Pipes and fittings shall be uniformly coloured over the whole wall.
The recommended colour for pipes and fittings is grey or black.
Annex A gives information on additional characteristics.
6 Geometrical characteristics
6.1 General
All dimensions shall be measured in accordance with ISO 3126.
The figures given in this document are schematic sketches only, to indicate the relevant dimensions.
They do not necessarily represent manufactured components. However, the dimensions given shall be
conformed to.
6.2 Dimensions of pipes
6.2.1 Outside diameters
The mean outside diameter, d , shall conform to Table 1 or Table 2, as applicable
em
Table 1 — Mean outside diameters (metric series)
Dimensions in millimetres
Nominal size Nominal outside Mean outside diameter
diameter
DN/OD d d
n em
min. max.
32 32 32,0 32,3
40 40 40,0 40,3
50 50 50,0 50,3
63 63 63,0 63,3
75 75 75,0 75,4
80 80 80,0 80,4
90 90 90,0 90,4
100 100 100,0 100,4
110 110 110,0 110,4
125 125 125,0 125,4
160 160 160,0 160,5
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ISO 19220:2021(E)
Table 2 — Mean outside diameters (series based on inch dimensions)
Dimensions in millimetres
Nominal size Nominal outside Mean outside diameter
diameter
DN/OD d d
n em
min. max.
36 36 36,1 36,5
43 43 42,7 43,1
55 55 55,7 56,1
6.2.2 Effective length of pipes
The effective length of a pipe, L , shall not be less than that declared by the manufacturer and shall
p
be measured as shown in Figure 1. For pipes with sockets, the effective length is considered to be the
distance between the pipe ends minus the socket length. For practical reasons, this length is measured
to the outside of the socket.
6.2.3 Chamfering
If a chamfer is applied, the angle of chamfering shall be between 15° and 45° to the axis of the pipe (see
Figure 3). When pipes without chamfer are used, the pipe ends shall be deburred.
The remaining wall thickness of the end of the pipe shall be at least 1/3 of e .
min
6.2.4 Wall thickness
The wall thickness, e, shall conform to Table 3 or Table 4, as applicable, but for the metric series
a maximum wall thickness at any point of up to 1,25 e is permitted, provided that the mean wall
min
thickness, e , is less than or equal to the specified e .
m m,max
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ISO 19220:2021(E)
a) Solvent cement pipe
b) Ring seal pipe
c) Plain ended pipe with chamfer
d) Plain ended pipe without chamfer
Figure 1 — Effective lengths of pipes
Table 3 — Wall thicknesses (metric series)
Dimensions in millimetres
Nominal size Nominal outside diameter Wall thickness
Pipe series
a a
S 25 S 16,7
DN/OD d e e e e
n min m,max min m,max
32 32 1,8 2,2 2,2 2,7
40 40 1,8 2,2 2,2 2,7
50 50 1,8 2,2 2,2 2,7
a
Pipe series are defined in ISO 4065.
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ISO 19220:2021(E)
Table 3 (continued)
Nominal size Nominal outside diameter Wall thickness
Pipe series
a a
S 25 S 16,7
DN/OD d e e e e
n min m,max min m,max
63 63 1,8 2,2 2,2 2,7
75 75 1,8 2,2 2,5 3
80 80 1,8 2,2 2,6 3,1
90 90 1,8 2,2 2,7 3,3
100 100 2 2,5 3 3,6
110 110 2,2 2,7 3,2 3,8
125 125 2,5 3 3,7 4,3
160 160 3,2 3,8 4,7 5,3
a
Pipe series are defined in ISO 4065.
Table 4 — Wall thicknesses (series based on inch dimensions)
Dimensions in millimetres
Nominal size Nominal outside Wall thickness
diameter
DN/OD d e e
n min m,max
36 36 1,8 2,2
43 43 1,9 2,3
55 55 2 2,4
6.3 Dimensions of fittings
6.3.1 Outside diameters
The mean outside diameter, d , of the spigot end shall conform to Table 1 or Table 2, as applicable.
em
6.3.2 z-lengths
The design length(s) [z-length(s)] of fittings (see Figures 8 to 21) shall be as given by the manufacturer.
NOTE The z-length(s) of a fitting are intended to assist in the design of moulds and are not intended to be
used for quality control purposes. ISO 265-1 can be used as a guideline.
6.3.3 Wall thickness
The minimum wall thickness, e , of the body or the spigot end of a fitting shall conform to Table 3 or
min
Table 4, as applicable, except that a reduction of 5 % resulting from core shifting is permitted. In such
cases, the average of two opposite wall thicknesses shall be equal to or greater than the values given in
Table 3 or Table 4, as applicable.
Where a fitting or adaptor provides a transition between two nominal sizes, the wall thickness of each
connecting part shall conform to the requirements for the applicable nominal size. In such cases, the
wall thickness of the fitting body is permitted to change gradually from the one wall thickness to the
other.
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ISO 19220:2021(E)
Where a sealing ring is located by means of a retaining cap or ring (see Figure 2), the wall thickness in
this area shall be calculated by addition of the wall thickness of the socket and the wall thickness of the
retaining cap or ring at the corresponding places in the same cross-sectional plane.
The wall thicknesses of fabricated fittings, except for spigot ends and sockets, may be changed locally
to suit the fabrication process, provided that the minimum wall thickness of the body conforms to the
minimum value of e as given in Table 8 or Table 9, as applicable.
g
Figure 2 — Example of calculation of wall thickness of socket with retaining cap
6.4 Dimensions of sockets and pipe ends
6.4.1 Classification and designation of sockets
6.4.1.1 General
Sockets shall be classified according to the type of joint for which they are intended, as indicated in
6.4.1.2 to 6.4.1.4.
6.4.1.2 Ring seal sockets
The lengths of ring seal sockets of type N and type L and of spigot ends are designed for pipes of
different lengths:
— Type N (normal): This socket type (see Figure 4) may be used as an expansion joint system. If this
socket type is part of a fixed joint system (i.e. a system which does not in itself allow for expansion
and contraction), it shall be used in conjunction with a type L (long) socket as specified in this
document. The values for the length of engagement, L , given in Table 5 or Table 6, as applicable, are
e
related to a pipe length of 3 m.
— Type L (long): This socket type (see Figure 5) may be used as an expansion joint in fixed joint
systems (i.e. systems which do not in themselves allow for expansion and contraction), whether
jointed by a ring seal or solvent cement or for use with sockets of type N, as applicable, where the
length of pipe exceeds the maximum given for these types.
6.4.1.3 Solvent cement sockets
The classification includes the following type:
— Type CS (short type for solvent cement joints): This socket type (see Figure 7) may be used where
jointing is carried out under controlled conditions.
6.4.1.4 Dual-purpose sockets
This socket type (see Figure 4) is intended to be used for a connection made either using a sealing ring
or using solvent cement applied after removal of the sealing ring, if any.
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ISO 19220:2021(E)
Sockets of type N (see 6.4.1.2) may be used as dual-purpose sockets.
6.4.2 Dimensions of ring seal sockets and spigot ends
6.4.2.1 Diameters and lengths
The diameters and lengths of ring seal sockets and spigot ends (see Figure 3, Figure 4 and Figure 5)
shall conform to one of the following tables:
— Table 5 or Table 6, as applicable, for type N and dual-purpose (see Figure 4);
— Table 7 for type L (see Figure 5);
and shall be in accordance with the following conditions:
a) where sealing rings are firmly retained, the minimum value of L and the maximum value of l
e sz
shall be as measured to the effective sealing point (see Figure 6 for an example) and this point
shall give a full sealing action;
b) where sealing rings are firmly retained, the required values given for dimension L (see Figure 4
l
or Figure 5) do not apply.
Different designs of ring seal socket (see Figure 4) may be used, provided the joints conform to the
requirements given in Clause 9.
Figure 3 — Dimensions of sockets and spigot ends for ring seal joints
© ISO 2021 – All rights reserved 9
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ISO 19220:2021(E)
Figure 4 — Typical groove designs for type N and dual-purpose ring seal sockets
Figure 5 — Example of a type L ring seal socket
10 © ISO 2021 – All rights reserved
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ISO 19220:2021(E)
Figure 6 — Example of measurement of effective sealing point
Table 5 — Diameters and lengths of type N and dual-purpose ring seal sockets and spigot ends
(metric series)
Dimensions in millimetres
Nominal
Nominal Mean inside diameter of Length of
outside Other socket dimensions
size socket spigot end
diameter
DN/OD d d L L l L
n sm e l sz sp
a
min. max. min. min. max. min.
32 32 32,3 32,7 24 5 18 42
40 40 40,3 40,7 26 5 18 44
50 50 50,3 50,7 28 5 18 46
63 63 63,3 63,7 31 5 18 49
75 75 75,4 75,7 33 5 18 51
80 80 80,4 80,7 34 5 18 52
90 90 90,4 90,7 36 5 20 56
100 100 100,4 100,7 36 6 21 57
110 110 110,4 110,8 36 6 22 58
125 125 125,4 125,9 38 7 26 64
160 160 160,5 161,0 41 9 32 73
a
Required for dual-purpose sockets only.
Table 6 — Diameters and lengths of type N and dual-purpose ring seal sockets and spigot ends
(series based on inch dimensions)
Dimensions in millimetres
Nominal
Nominal Mean inside diameter of Length of
outside Other socket dimensions
size socket spigot end
diameter
DN/OD d d L L l L
n sm e l sz sp
a
min. max. min. min. max. min.
36 36 36,5 37,2 25 3,8 12 37
43 43 43,1 43,8 25 3,8 15 40
55 55 56,1 56,8 25 3,8 18 43
a
Required for dual-purpose sockets only.
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ISO 19220:2021(E)
Table 7 — Diameters and lengths of type L ring seal sockets and spigot ends (metric series)
Dimensions in millimetres
Nominal Mean inside Length
Nominal
outside diameter of Other socket dimensions of spigot
size
diameter socket end
DN/OD d d L L l l L
n sm e l sz eff sp
min. min. min. max. min. min.
32 32 32,4 5 18 35
40 40 40,4 5 18 36
50 50 50,4 5 18 38
63 63 63,4 5 18 40
75 75 75,4 5 20 43
80 80 80,4 65 5 22 45 44
90 90 90,4 5 23 46
100 100 100,5 6 25 50
110 110 110,5 6 26 54
125 125 125,5 7 28 60
160 160 160,6 9 32 74
6.4.2.2 Wall thicknesses of ring seal sockets
The wall thickness of the socket, e , and the wall thickness in the groove area, e , shall conform to
s g
Table 8 or Table 9, as applicable.
Table 8 — Wall thicknesses of sockets (metric series)
Dimensions in
...
INTERNATIONAL ISO
STANDARD 19220
Second edition
Plastics piping systems for soil
and waste discharge (low and high
temperature) inside buildings —
Styrene copolymer blends (SAN + PVC)
Systèmes de canalisations en plastique pour l'évacuation des
eaux-vannes et des eaux usées (à basse et à haute température) à
l'intérieur des bâtiments — Mélanges de copolymères de styrène (SAN
+ PVC)
PROOF/ÉPREUVE
Reference number
ISO 19220:2021(E)
©
ISO 2021
---------------------- Page: 1 ----------------------
ISO 19220:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 19220:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 Symbols . 2
3.2 Abbreviated terms . 3
4 Material . 3
4.1 SAN + PVC compound . 3
4.2 Reprocessable and recyclable material . 3
4.3 Sealing ring retaining means . 3
4.4 Fire behaviour . 3
5 General characteristics . 3
5.1 Appearance . 3
5.2 Colour . 4
6 Geometrical characteristics . 4
6.1 General . 4
6.2 Dimensions of pipes . 4
6.2.1 Outside diameters . 4
6.2.2 Effective length of pipes . . 5
6.2.3 Chamfering . 5
6.2.4 Wall thickness . 5
6.3 Dimensions of fittings . 7
6.3.1 Outside diameters . 7
6.3.2 z-lengths . 7
6.3.3 Wall thickness . 7
6.4 Dimensions of sockets and pipe ends . 8
6.4.1 Classification and designation of sockets . 8
6.4.2 Dimensions of ring seal sockets and spigot ends . 9
6.4.3 Dimensions of solvent cement sockets and spigot ends .13
6.5 Types of fitting.14
7 Mechanical characteristics of pipes .22
7.1 General characteristics .22
7.2 Additional characteristics .23
8 Physical characteristics .24
8.1 Physical characteristics of pipes .24
8.2 Physical characteristics of fittings .24
9 Performance requirements .25
10 Sealing rings .25
11 Adhesives .25
12 Marking .26
12.1 General .26
12.2 Minimum required marking of pipes .26
12.3 Minimum required marking of fittings .26
13 Installation of piping systems .27
Annex A (informative) Additional characteristics of (SAN + PVC) pipes and fittings .28
Bibliography .29
© ISO 2021 – All rights reserved PROOF/ÉPREUVE iii
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ISO 19220:2021(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 1, Plastics pipes and fittings for soil, waste and drainage (including
land drainage).
This second edition cancels and replaces the first edition (ISO 19220:2004), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— references to EN standards have been changed to references to ISO standards;
— Introduction has been deleted.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
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INTERNATIONAL STANDARD ISO 19220:2021(E)
Plastics piping systems for soil and waste discharge
(low and high temperature) inside buildings — Styrene
copolymer blends (SAN + PVC)
1 Scope
This document specifies the requirements for solid-wall styrene copolymer blend (SAN + PVC) pipes
and fittings for soil and waste discharge (low and high temperature) above ground inside buildings,
and for the system itself. It does not include buried pipework.
It also specifies the test parameters for the test methods referred to within this document.
This document is applicable to SAN + PVC pipes and fittings, as well as assemblies of such pipes and
fittings, intended to be used for the following purposes:
a) soil and waste discharge pipework for the conveyance of domestic waste waters (low and high
temperature);
b) ventilation pipework associated with a);
c) rainwater pipework inside the building.
This document is applicable to pipes and fittings designed for jointing by means of elastomeric sealing
rings, solvent cementing or integral dual-purpose sockets, i.e. for elastomeric ring seal joints and/or for
solvent cement joints.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 2505, Thermoplastics pipes — Longitudinal reversion — Test method and parameters
ISO 2507-1, Thermoplastics pipes and fittings — Vicat softening temperature — Part 1: General test method
ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
ISO 3127, Thermoplastics pipes — Determination of resistance to external blows — Round-the-clock
method
ISO 4633, Rubber seals — Joint rings for water supply, drainage and sewerage pipelines — Specification for
materials
ISO 8361-1, Thermoplastics pipes and fittings — Water absorption — Part 1: General test method
ISO 13254, Thermoplastics piping systems for non-pressure applications — Test method for watertightness
ISO 13255, Thermoplastics piping systems for soil and waste discharge inside buildings — Test method for
airtightness of joints
ISO 13257, Thermoplastics piping systems for non-pressure applications — Test method for resistance to
elevated temperature cycling
EN 681-2, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 2: Thermoplastic elastomers
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ISO 19220:2021(E)
EN 1411, Plastics piping and ducting systems - Thermoplastics pipes - Determination of resistance to
external blows by the staircase method
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 Symbols
d outside diameter (at any point)
e
d mean outside diameter
em
d nominal outside diameter
n
d inside diameter of the socket
s
d mean inside diameter of the socket
sm
DN nominal size
DN/OD nominal size (outside-diameter related)
e wall thickness (at any point)
e mean wall thickness (e )
m s
e wall thickness of the socket
s
e wall thickness at the groove
g
l depth of sealing zone
sz
l effective insertion depth
eff
L length of solvent cement socket
c
L length of engagement
e
L length of lead-in
l
L effective length of a pipe
p
L length of spigot
sp
L design length (z-length) of a fitting
z
R radius of swept fittings z
α nominal angle of a fitting
H drop height for 50 % failure
50
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ISO 19220:2021(E)
3.2 Abbreviated terms
PVC poly (vinyl chloride)
SAN styrene-acrylonitrile
SAN + PVC styrene copolymer blends
TIR true impact rate
VST vicat softening temperature
4 Material
4.1 SAN + PVC compound
The compound for pipes and fittings shall be a styrene copolymer blend consisting of SAN and PVC
to which may be added those additives that are needed to facilitate the manufacture of components
conforming to the requirements of this document.
Other additives may be used in order to conform to national requirements on fire regulations.
Fabricated fittings or parts of fabricated fittings shall be made from pipes and/or mouldings
conforming to this document, except for the requirements for wall thickness of fabricated fittings and/
or mouldings made from SAN + PVC, which conform to the respective material, mechanical and physical
characteristics as required in this document.
NOTE Material conforming to this requirement generally contains 40 % to 60 % of SAN.
4.2 Reprocessable and recyclable material
In addition to virgin material, the use of reprocessable material obtained during the production and
testing of products conforming to this document is permitted. External reprocessable or recyclable
material shall not be used.
4.3 Sealing ring retaining means
Sealing rings may be retained using means made from plastics other than SAN + PVC, provided the
joints conform to the requirements given in Clause 9.
4.4 Fire behaviour
No specific requirements are set by this document for fire behaviour. Attention is drawn to the need to
acknowledge any relevant national regulations in this respect.
5 General characteristics
5.1 Appearance
When viewed without magnification, the following requirements shall be met:
— the internal and external surfaces of pipes and fittings shall be smooth, clean and free from grooving,
blistering, impurities, pores or any other surface irregularity likely to prevent conformity of pipes
and fittings to this document;
— each end of a pipe or fitting shall be cleanly cut, if applicable, and shall be square to its axis.
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ISO 19220:2021(E)
5.2 Colour
Pipes and fittings shall be uniformly coloured over the whole wall.
The recommended colour for pipes and fittings is grey or black.
Annex A gives information on additional characteristics.
6 Geometrical characteristics
6.1 General
All dimensions shall be measured in accordance with ISO 3126.
The figures given in this document are schematic sketches only, to indicate the relevant dimensions.
They do not necessarily represent manufactured components. However, the dimensions given shall be
conformed to.
6.2 Dimensions of pipes
6.2.1 Outside diameters
The mean outside diameter, d , shall conform to Table 1 or Table 2, as applicable
em
Table 1 — Mean outside diameters (metric series)
Dimensions in millimetres
Nominal size Nominal outside diam- Mean outside diameter
eter
DN/OD d d
n em
min. max.
32 32 32,0 32,3
40 40 40,0 40,3
50 50 50,0 50,3
63 63 63,0 63,3
75 75 75,0 75,4
80 80 80,0 80,4
90 90 90,0 90,4
100 100 100,0 100,4
110 110 110,0 110,4
125 125 125,0 125,4
160 160 160,0 160,5
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ISO 19220:2021(E)
Table 2 — Mean outside diameters (series based on inch dimensions)
Dimensions in millimetres
Nominal size Nominal outside diam- Mean outside diameter
eter
DN/OD d d
n em
min. max.
36 36 36,1 36,5
43 43 42,7 43,1
55 55 55,7 56,1
6.2.2 Effective length of pipes
The effective length of a pipe, L , shall not be less than that declared by the manufacturer and shall
p
be measured as shown in Figure 1. For pipes with sockets, the effective length is considered to be the
distance between the pipe ends minus the socket length. For practical reasons, this length is measured
to the outside of the socket.
6.2.3 Chamfering
If a chamfer is applied, the angle of chamfering shall be between 15° and 45° to the axis of the pipe (see
Figure 3). When pipes without chamfer are used, the pipe ends shall be deburred.
The remaining wall thickness of the end of the pipe shall be at least 1/3 of e .
min
6.2.4 Wall thickness
The wall thickness, e, shall conform to Table 3 or Table 4, as applicable, but for the metric series
a maximum wall thickness at any point of up to 1,25 e is permitted, provided that the mean wall
min
thickness, e , is less than or equal to the specified e .
m m,max
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ISO 19220:2021(E)
a) Solvent cement pipe
b) Ring seal pipe
c) Plain ended pipe with chamfer
d) Plain ended pipe without chamfer
Figure 1 — Effective lengths of pipes
Table 3 — Wall thicknesses (metric series)
Dimensions in millimetres
Nominal size Nominal outside diameter Wall thickness
Pipe series
a a
S 25 S 16,7
DN/OD d e e e e
n min m,max min m,max
32 32 1,8 2,2 2,2 2,7
40 40 1,8 2,2 2,2 2,7
50 50 1,8 2,2 2,2 2,7
a
Pipe series are defined in ISO 4065.
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ISO 19220:2021(E)
Table 3 (continued)
Nominal size Nominal outside diameter Wall thickness
Pipe series
a a
S 25 S 16,7
DN/OD d e e e e
n min m,max min m,max
63 63 1,8 2,2 2,2 2,7
75 75 1,8 2,2 2,5 3
80 80 1,8 2,2 2,6 3,1
90 90 1,8 2,2 2,7 3,3
100 100 2 2,5 3 3,6
110 110 2,2 2,7 3,2 3,8
125 125 2,5 3 3,7 4,3
160 160 3,2 3,8 4,7 5,3
a
Pipe series are defined in ISO 4065.
Table 4 — Wall thicknesses (series based on inch dimensions)
Dimensions in millimetres
Nominal size Nominal outside diam- Wall thickness
eter
DN/OD d e e
n min m,max
36 36 1,8 2,2
43 43 1,9 2,3
55 55 2 2,4
6.3 Dimensions of fittings
6.3.1 Outside diameters
The mean outside diameter, d , of the spigot end shall conform to Table 1 or Table 2, as applicable.
em
6.3.2 z-lengths
The design length(s) [z-length(s)] of fittings (see Figures 8 to 21) shall be as given by the manufacturer.
NOTE The z-length(s) of a fitting are intended to assist in the design of moulds and are not intended to be
used for quality control purposes. ISO 265-1 can be used as a guideline.
6.3.3 Wall thickness
The minimum wall thickness, e , of the body or the spigot end of a fitting shall conform to Table 3 or
min
Table 4, as applicable, except that a reduction of 5 % resulting from core shifting is permitted. In such
cases, the average of two opposite wall thicknesses shall be equal to or greater than the values given in
Table 3 or Table 4, as applicable.
Where a fitting or adaptor provides a transition between two nominal sizes, the wall thickness of each
connecting part shall conform to the requirements for the applicable nominal size. In such cases, the
wall thickness of the fitting body is permitted to change gradually from the one wall thickness to the
other.
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ISO 19220:2021(E)
Where a sealing ring is located by means of a retaining cap or ring (see Figure 2), the wall thickness in
this area shall be calculated by addition of the wall thickness of the socket and the wall thickness of the
retaining cap or ring at the corresponding places in the same cross-sectional plane.
The wall thicknesses of fabricated fittings, except for spigot ends and sockets, may be changed locally
to suit the fabrication process, provided that the minimum wall thickness of the body conforms to the
minimum value of e as given in Table 8 or Table 9, as applicable.
g
Figure 2 — Example of calculation of wall thickness of socket with retaining cap
6.4 Dimensions of sockets and pipe ends
6.4.1 Classification and designation of sockets
6.4.1.1 General
Sockets shall be classified according to the type of joint for which they are intended, as indicated in
6.4.1.2 to 6.4.1.4.
6.4.1.2 Ring seal sockets
The lengths of ring seal sockets of type N and type L and of spigot ends are designed for pipes of
different lengths:
— Type N (normal): This socket type (see Figure 4) may be used as an expansion joint system. If this
socket type is part of a fixed joint system (i.e. a system which does not in itself allow for expansion
and contraction), it shall be used in conjunction with a type L (long) socket as specified in this
document. The values for the length of engagement, L , given in Table 5 or Table 6, as applicable, are
e
related to a pipe length of 3 m.
— Type L (long): This socket type (see Figure 5) may be used as an expansion joint in fixed joint
systems (i.e. systems which do not in themselves allow for expansion and contraction), whether
jointed by a ring seal or solvent cement or for use with sockets of type N, as applicable, where the
length of pipe exceeds the maximum given for these types.
6.4.1.3 Solvent cement sockets
The classification includes the following type:
— Type CS (short type for solvent cement joints): This socket type (see Figure 7) may be used where
jointing is carried out under controlled conditions.
6.4.1.4 Dual-purpose sockets
This socket type (see Figure 4) is intended to be used for a connection made either using a sealing ring
or using solvent cement applied after removal of the sealing ring, if any.
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ISO 19220:2021(E)
Sockets of type N (see 6.4.1.2) may be used as dual-purpose sockets.
6.4.2 Dimensions of ring seal sockets and spigot ends
6.4.2.1 Diameters and lengths
The diameters and lengths of ring seal sockets and spigot ends (see Figure 3, Figure 4 and Figure 5)
shall conform to one of the following tables:
— Table 5 or Table 6, as applicable, for type N and dual-purpose (see Figure 4);
— Table 7 for type L (see Figure 5);
and shall be in accordance with the following conditions:
a) where sealing rings are firmly retained, the minimum value of L and the maximum value of l
e sz
shall be as measured to the effective sealing point (see Figure 6 for an example) and this point
shall give a full sealing action;
b) where sealing rings are firmly retained, the required values given for dimension L (see Figure 4
l
or Figure 5) do not apply.
Different designs of ring seal socket (see Figure 4) may be used, provided the joints conform to the
requirements given in Clause 9.
Figure 3 — Dimensions of sockets and spigot ends for ring seal joints
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ISO 19220:2021(E)
Figure 4 — Typical groove designs for type N and dual-purpose ring seal sockets
Figure 5 — Example of a type L ring seal socket
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ISO 19220:2021(E)
Figure 6 — Example of measurement of effective sealing point
Table 5 — Diameters and lengths of type N and dual-purpose ring seal sockets and spigot ends
(metric series)
Dimensions in millimetres
Nominal
Nominal Mean inside diameter of Length of
outside Other socket dimensions
size socket spigot end
diameter
DN/OD d d L L l L
n sm e l sz sp
a
min. max. min. min. max. min.
32 32 32,3 32,7 24 5 18 42
40 40 40,3 40,7 26 5 18 44
50 50 50,3 50,7 28 5 18 46
63 63 63,3 63,7 31 5 18 49
75 75 75,4 75,7 33 5 18 51
80 80 80,4 80,7 34 5 18 52
90 90 90,4 90,7 36 5 20 56
100 100 100,4 100,7 36 6 21 57
110 110 110,4 110,8 36 6 22 58
125 125 125,4 125,9 38 7 26 64
160 160 160,5 161,0 41 9 32 73
a
Required for dual-purpose sockets only.
Table 6 — Diameters and lengths of type N and dual-purpose ring seal sockets and spigot ends
(series based on inch dimensions)
Dimensions in millimetres
Nominal
Nominal Mean inside diameter of Length of
outside Other socket dimensions
size socket spigot end
diameter
DN/OD d d L L l L
n sm e l sz sp
a
min. max. min. min. max. min.
36 36 36,5 37,2 25 3,8 12 37
43 43 43,1 43,8 25 3,8 15 40
55 55 56,1 56,8 25 3,8 18 43
a
Required for dual-purpose sockets only.
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ISO 19220:2021(E)
Table 7 — Diameters and lengths of type L ring seal sockets and spigot ends (metric series)
Dimensions in millimetres
Nominal Length
Nominal Mean inside diame-
outside Other socket dimensions of spigot
size ter of socket
diameter end
DN/OD d d L L l l L
n sm e l sz eff sp
min. min. min. max. min. min.
32 32 32,4 5 18 35
40 40 40,4 5 18 36
50 50 50,4 5 18 38
63 63 63,4 5 18 40
75 75 75,4 5 20 43
80 80 80,4 65 5 22 45 44
90 90 90,4 5 23 46
100 100 100,5 6 25 50
110 110 110,5 6 26 54
125 125 125,5 7 28 60
160 160 160,6 9 32 74
6.4.2.2 Wall thicknesses of ring seal sockets
The wall thickness of
...
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