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  • BSI
    BS ISO 4437-4:2015 Plastics piping systems for the supply of gaseous fuels. Polyethylene (PE) - Valves
    Edition: 2015
    $435.35
    / user per year

Description of BS ISO 4437-4:2015 2015

This part of ISO 4437 specifies the characteristics of valves made from polyethylene (PE) 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 4437-3:2014, and ISO 4437-5, it is applicable to PE valves, their joints, and to 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 MRS divided by the C factor and taking into account RCP requirements;

  2. temperature of 20 °C as reference temperature;

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

  3. operating temperature between −20 °C and +40 °C.

This International Standard covers a range of maximum operating pressures and gives requirements concerning colours and additives.

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.

It is applicable to bi-directional valves with spigot ends or electrofusion sockets intended to be jointed with PE pipes conforming to ISO 4437-2 without any fittings or with PE fittings conforming to ISO 4437-3:2014.

This part of ISO 4437 covers valves for pipes with a nominal outside diameter dn ≤ 400 mm.

NOTE 3 Valves made from materials other than polyethylene designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PE piping systems according to ISO 4437 provided that they have relevant PE connections for butt fusion or electrofusion ends (see ISO 4437-3). The component, i.e. the complete valve, shall fulfil the requirements of this part of ISO 4437.



Standard NumberBS ISO 4437-4:2015
TitlePlastics piping systems for the supply of gaseous fuels. Polyethylene (PE) - Valves
StatusWithdrawn
Publication Date2015-04-30
Withdrawn Date2022-11-30
Replaced ByBS ISO 4437-4:2022
Identical National Standard OfISO 4437-4:2015
DescriptorsPlastics, Pipelines, Plastic pipelines, Pipe fittings, Testing conditions, Pipework systems, Pipes, Gas-pipe fittings, Pipe couplings, Valves, Polyethylene, Gaseous fuels, Gas pipelines, Thermoplastic polymers, Gas pipes, Gas valves
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 81958 2
PublisherBSI
Pages28

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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