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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Status
Published
Publication Date
05-Jul-2021
Current Stage
5060 - Close of voting Proof returned by Secretariat
Start Date
09-Jun-2021
Completion Date
09-Jun-2021
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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
---------------------- 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 © 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
---------------------- Page: 4 ----------------------
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
© ISO 2021 – All rights reserved 1
---------------------- Page: 5 ----------------------
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)
d mean outside diameter
d nominal outside diameter
d inside diameter of the socket
d mean inside diameter of the socket
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
e wall thickness at the groove
l depth of sealing zone
l effective insertion depth
eff
L length of solvent cement socket
L length of engagement
L length of lead-in
L effective length of a pipe
L length of spigot
L design length (z-length) of a fitting
R radius of swept fittings z
α nominal angle of a fitting
H drop height for 50 % failure
2 © ISO 2021 – All rights reserved
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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.

© ISO 2021 – All rights reserved 3
---------------------- Page: 7 ----------------------
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

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
4 © ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
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

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
© ISO 2021 – All rights reserved 5
---------------------- Page: 9 ----------------------
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
Pipe series are defined in ISO 4065.
6 © ISO 2021 – All rights reserved
---------------------- Page: 10 ----------------------
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
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.

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.
© ISO 2021 – All rights reserved 7
---------------------- Page: 11 ----------------------
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.
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

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.
8 © ISO 2021 – All rights reserved
---------------------- Page: 12 ----------------------
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

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
---------------------- Page: 13 ----------------------
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
---------------------- Page: 14 ----------------------
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
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
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
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
Required for dual-purpose sockets only.
© ISO 2021 – All rights reserved 11
---------------------- Page: 15 ----------------------
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

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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)
d mean outside diameter
d nominal outside diameter
d inside diameter of the socket
d mean inside diameter of the socket
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
e wall thickness at the groove
l depth of sealing zone
l effective insertion depth
eff
L length of solvent cement socket
L length of engagement
L length of lead-in
L effective length of a pipe
L length of spigot
L design length (z-length) of a fitting
R radius of swept fittings z
α nominal angle of a fitting
H drop height for 50 % failure
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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

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

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
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
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.

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.
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

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

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
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
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
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
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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