ISO 8085-3:2001
(Main)Polyethylene fittings for use with polyethylene pipes for the supply of gaseous fuels — Metric series — Specifications — Part 3: Electrofusion fittings
Polyethylene fittings for use with polyethylene pipes for the supply of gaseous fuels — Metric series — Specifications — Part 3: Electrofusion fittings
Raccord en polyéthylène pour utilisation avec des tubes en polyéthylène pour la distribution de combustibles gazeux — Série métrique — Spécifications — Partie 3: Raccords électrosoudables
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INTERNATIONAL ISO
STANDARD 8085-3
First edition
2001-09-01
Corrected version
2004-09-15
Polyethylene fittings for use with
polyethylene pipes for the supply of
gaseous fuels — Metric series —
Specifications —
Part 3:
Electrofusion fittings
Raccords en polyéthylène pour utilisation avec des tubes en polyéthylène
pour la distribution de combustibles gazeux — Série métrique —
Spécifications —
Partie 3: Raccords électrosoudables
Reference number
©
ISO 2001
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ii © ISO 2001 – All rights reserved
Contents Page
Foreword . iv
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 3
4 Symbols. 5
5 Material. 6
6 General requirements. 10
7 Geometrical characteristics. 11
8 Mechanical characteristics. 13
9 Physical characteristics. 16
10 Technical file. 16
11 Marking. 16
12 Packaging. 17
Annex A (informative) Examples of typical connector sockets for electrofusion fittings . 18
Annex B (normative) Formulae for calculating the equivalent dimensions of non-metric fitting series . 21
Annex C (normative) Short-term pressure test method . 22
Annex D (normative) Tensile test for fitting/pipe assemblies. 24
Bibliography. 25
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this part of ISO 8085 may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 8085-3 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and
valves for the transport of fluids, Subcommittee SC 4, Plastics pipes and fittings for the supply of gaseous fuels.
ISO 8085 consists of the following parts, under the general title Polyethylene fittings for use with polyethylene pipes
for the supply of gaseous fuels — Metric series — Specifications:
— Part 1: Fittings for socket fusion using heated tools
— Part 2: Spigot fittings for butt fusion, for socket fusion using heated tools and for use with electrofusion fittings
— Part 3: Electrofusion fittings
Annexes B, C and D form a normative part of this part of ISO 8085. Annex A is for information only.
In this corrected version of ISO 8085-3:2001, the reference to Table 5 in 7.2.2.2 b) has been corrected to read
“conform to Table 4…”.
In addition, Clause 2 (normative references) has been updated by inserting the years of publication of ISO 9080,
ISO 18553 and EN 682.
Users should further note that normative reference ASTM D 4019-94 (cited in Table 1) has been withdrawn without
replacement.
iv © ISO 2001 – All rights reserved
INTERNATIONAL STANDARD ISO 8085-3:2001(E)
Polyethylene fittings for use with polyethylene pipes for the supply
of gaseous fuels — Metric series — Specifications —
Part 3:
Electrofusion fittings
1 Scope
This part of ISO 8085 specifies the requirements for polyethylene (PE) electrofusion fittings intended to be used
with PE pipes and fittings for the supply of gaseous fuels.
In addition, it specifies some general properties of the material from which these fittings are made.
This part of ISO 8085 also lays down requirements for dimensions and performance of such fittings.
It is applicable to electrofusion fittings designed to be fusion-jointed to PE pipes conforming to ISO 4437, and to
spigot fittings conforming to ISO 8085-2.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this part of ISO 8085. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 8085 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain
registers of currently valid International Standards.
ISO 3:1973, Preferred numbers — Series of preferred numbers
ISO 497:1973, Guide to the choice of series of preferred numbers and of series containing more rounded values of
preferred numbers
ISO 1133:1997, Plastics — Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of
thermoplastics
ISO 1167:1996, Thermoplastics pipes for the conveyance of fluids — Resistance to internal pressure — Test
method
ISO 1183 (all parts), Plastics — Methods for determining the density of non-cellular plastics
ISO 1872-1:1993, Plastics — Polyethylene (PE) moulding and extrusion materials — Part 1: Designation system
and basis for specifications
1)
ISO 3126:— , Plastics piping systems — Plastics piping components — Measurement and determination of
dimensions
1) To be published. (Revision of ISO 3126:1974)
ISO 4437:1997, Buried polyethylene (PE) pipes for the supply of gaseous fuels — Metric series — Specifications
ISO 6964:1986, Polyolefin pipes and fittings — Determination of carbon black content by calcination and pyrolysis —
Test method and basic specification
ISO 8085-2:2001, Polyethylene fittings for use with polyethylene pipes for the supply of gaseous fuels — Metric
series — Specifications — Part 2: Spigot fittings for butt fusion, for socket fusion using heated tools and for use
with electrofusion fittings
ISO 9356:1989, Polyolefin pipe assemblies with or without jointed fittings — Resistance to internal pressure — Test
method
ISO 9080:2003, Plastics piping and ducting systems — Determination of the long-term hydrostatic strength of
thermoplastics materials in pipe form by extrapolation
ISO/TR 10837:1991, Determination of the thermal stability of polyethylene (PE) for use in gas pipes and fittings
ISO/TS 10839:2000, Polyethylene pipes and fittings for the supply of gaseous fuels — Code of practice for design,
handling and installation
ISO 11413:1996, Plastics pipes and fittings — Preparation of test piece assemblies between a polyethylene (PE)
pipe and an electrofusion fitting
ISO 12162:1995, Thermoplastics materials for pipes and fittings for pressure applications — Classification and
designation — Overall service (design) coefficient
ISO 12176-2:2000, Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 2:
Electrofusion
ISO 13477:1997, Thermoplastics pipes for the conveyance of fluids — Determination of resistance to rapid crack
propagation (RCP) — Small-scale steady-state test (S4 test)
ISO 13478:1997, Thermoplastics pipes for the conveyance of fluids — Determination of resistance to rapid crack
propagation (RCP) — Full-scale test (FST)
ISO 13479:1997, Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack propagation —
Test method for slow crack growth on notched pipes (notch test)
ISO 13951:2001, Plastics piping systems — Test method for the resistance of polyolefin pipe/pipe or pipe/fitting
assemblies to tensile loading
ISO 13954:1997, Plastics pipes and fittings — Peel decohesion test for polyethylene (PE) electrofusion assemblies
of nominal outside diameter greater than or equal to 90 mm
ISO 13955:1997, Plastics pipes and fittings — Crushing decohesion test for polyethylene (PE) electrofusion
assemblies
ISO 13957:1997, Plastics pipes and fittings — Polyethylene (PE) tapping tees — Test method for impact resistance
ISO 18553:2002, Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin
pipes, fittings and compounds
ASTM D 4019-94, Standard Test Method for Moisture in Plastics by Coulometric Regeneration of Phosphorus
Pentoxide
2 © ISO 2001 – All rights reserved
EN 682:2002, Elastomeric seals — Materials requirements for seals used in pipes and fittings carrying gas and
hydrocarbon fluids
EN 12117:1997, Plastics piping systems — Fittings, valves and ancillaries — Determination of gaseous flow
rate/pressure drop relationships
IEC 60529:2001, Degrees of protection provided by enclosures (IP Code)
3 Terms and definitions
For the purposes of this part of ISO 8085, the following terms and definitions apply.
3.1 Geometrical definitions
3.1.1
nominal diameter of a fitting
d
n
the nominal diameter of a fitting is taken as the nominal diameter of the corresponding pipe series
3.1.2
nominal wall thickness of a fitting
e
n
the nominal wall thickness of a fitting is taken as the nominal wall thickness of the corresponding pipe series
3.1.3
mean inside diameter
arithmetic mean of at least two inside diameters measured at right angles to each other in transverse planes
3.1.4
out-of-roundness of a socket
maximum inside diameter minus the minimum inside diameter of the socket, measured in the same plane, parallel
to the plane of the mouth
3.1.5
maximum out-of-roundness of a socket
greatest value of the out-of-roundness between the plane of the mouth and a plane separated from it by a distance
L (the design penetration depth)
3.1.6
standard dimension ratio of a fitting
SDR
quotient of the nominal outside diameter and the nominal wall thickness
d
n
SDR =
e
n
3.1.7
wall thickness of a fitting
E
wall thickness at any point of the body of the fitting which could be subjected to the full stress induced by the
pressure of the gas in the piping system
3.2 Material definitions
3.2.1
virgin material
thermoplastics material in a form such as granules or powder which has not been previously processed other than
for compounding and to which no reprocessable or recyclable materials have been added
3.2.2
reprocessable material
thermoplastics material prepared from clean unused rejected pipes, fittings or valves, produced in a manufacturer’s
plant by a process such
...
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