ISO 4437-3:2024 燃气用塑料管道系统 聚乙烯（PE） 第3部分：配件

标准编号：ISO 4437-3:2024

中文名称：燃气用塑料管道系统 聚乙烯（PE） 第3部分：配件

英文名称：Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 3: Fittings

发布日期：2024-02

标准范围

本文件规定了由聚乙烯（PE）制成的熔融配件以及用于气体燃料供应领域管道系统的机械配件的特性。它还规定了本文档中提到的测试方法的测试参数。与ISO 4437-1、ISO 4437-2、ISO 4437-4和ISO 4437-5一起，本文件适用于PE管道、配件和阀门、它们的接头以及具有PE和其他材料部件的接头，用于以下条件:a)出于设计目的，在20℃的参考温度下，最大工作压力(MOP)高达并包括10巴[1]；b)工作温度在？20℃和40℃。对于20°C至40°C之间的工作温度，降额系数在ISO 4437-5.ISO 4437系列涵盖了一系列最大工作压力，并给出了有关颜色的要求。买方或指定方有责任从这些方面做出适当的选择，同时考虑其特殊要求以及任何相关的国家法规和安装惯例或规范。本文件适用于以下类型的配件:-电熔插座配件；-电熔鞍形配件；-插口端配件(用于使用加热工具的对接熔合和电熔插座熔合)；-插座熔接配件；-机械配件。注1:配件可以是例如连接器、鞍座、等径三通和变径三通、变径三通、弯头、弯头或端盖的形式。注2装配式配件通常不用于气体应用，除非尺寸较大或没有其他解决方案。指南可在ISO 4427-3:20 19附录B中找到。[1]1巴=0.1 MPa=105巴；1MPa=1N/mm2。

This document 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 document.

In conjunction with ISO 4437-1, ISO 4437-2, ISO 4437-4 and ISO 4437-5, this document 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:

a)       a maximum operating pressure (MOP), up to and including 10 bar[1], at a reference temperature of 20 °C for design purposes;

b)       an operating temperature between？20 °C and 40 °C.

For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in ISO 4437-5.

The ISO 4437 series covers a range of maximum operating pressures and gives requirements concerning colours.

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 document 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.

NOTE 1        The fittings can be, for example, in the form of couplers, saddles, equal and reduced tees, reducers, elbows, bends or end caps.

NOTE 2        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 4427-3:2019, Annex B.

标准预览图