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  • BSI
    BS ISO 4437-3:2014 Plastics piping systems for the supply of gaseous fuels. Polyethylene (PE) - Fittings
    Edition: 2014
    $421.23
    / user per year

Description of BS ISO 4437-3:2014 2014

This part of ISO 4437 specifies the characteristics of fusion fittings made from polyethylene (PE) as well as of mechanical fittings for piping systems in the field of the supply of gaseous fuels.

It also specifies the test parameters for the test methods referred to in this part of ISO 4437.

In conjunction with ISO 4437-1, ISO 4437-2, ISO 4437-4, and ISO 4437-5, it is applicable to PE pipes, fittings and valves, their joints, and joints with components of PE and other materials intended to be used under the following conditions:

  1. the maximum operating pressure (MOP) is based on the design stress, determined from the compound minimum required strength (MRS) divided by the C factor, and taking into account rapid crack propagation (RCP) requirements;

  2. a temperature of 20 °C as reference temperature for the design basis.

NOTE 1 For other operating temperatures, derating coefficients are given in ISO 4437-5:2014.

NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

This part of ISO 4437 is applicable for fittings of the following types:

  • electrofusion socket fittings;

  • electrofusion saddle fittings;

  • spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion);

  • socket fusion fittings;

  • mechanical fittings.

The fittings can for example be in the form of couplers, saddles, equal and reduced tees, reducers, elbows, bends, or end caps.

NOTE 3 Fabricated fittings are normally not used for gas applications except for larger dimensions or in the absence of other solutions. Guidance can be found in ISO 4427-3:2007, Annex B.[2]



Standard NumberBS ISO 4437-3:2014
TitlePlastics piping systems for the supply of gaseous fuels. Polyethylene (PE) - Fittings
StatusWithdrawn
Publication Date2014-01-31
Withdrawn Date2024-02-21
ReplacesBS ISO 8085-2:2001, BS ISO 8085-3:2001, BS ISO 8085-1:2001, BS ISO 4437:2007
Replaced ByBS ISO 4437-3:2024
Identical National Standard OfISO 4437-3:2014
DescriptorsPlastics, Gases, Gaseous fuels, Gas pipes, Gas supply, Marking, Physical properties of materials, Polyethylene, Gas pipelines, Pipe coatings, Mechanical properties of materials, Underground, Pipes, Mathematical calculations, Dimensions
ICS75.200 Petroleum products and natural gas handling equipment, 83.140.30 Plastics pipes and fittings for non fluid use
CommitteePRI/88
ISBN978 0 580 77408 9
PublisherBSI
Pages42

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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