ISO 4437-4:2022 燃气供应用塑料管道系统 聚乙烯（PE） 第4部分：阀门

标准编号：ISO 4437-4:2022

中文名称：燃气供应用塑料管道系统 聚乙烯（PE） 第4部分：阀门

英文名称：Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 4: Valves

发布日期：2022-11

标准范围

本文件规定了气体燃料供应领域管道系统用聚乙烯（PE）制成的阀门的特性。适用于拟与符合ISO？4437？2和ISO？4437？分别为3。根据ISO？4437系列，前提是它们具有用于对接熔合或电熔端的PE连接，包括集成材料过渡接头，符合ISO？4437-3.它还规定了本文档中提到的测试方法的测试参数。结合ISO的第1、2、3和5部分？4437系列，本文件适用于PE阀门、它们的接头以及用PE和其他材料组成的接头条件:a)最大工作压力(MOP)不超过10？棒[1]在参考温度为20？C用于设计目的；笔记？1就本文件和ISO的参考文献而言？8233，MOP被认为是标称压力。b)工作温度在？20？℃至40℃？°C。笔记？2？对于工作温度在20？°C和40？°C，降额系数在ISO？4437？5.本文件涵盖设计用于与公称外径为dn？的管道连接的阀体。≤？400？嗯。？[1]1？酒吧？=？0,1？MPa=105帕；1？MPa=1？N/mm2。

This document specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.It is applicable to unidirectional and bi-directional isolating valves with spigot ends or electrofusion sockets intended to be fused with PE pipes or fittings conforming to ISO 4437？2 and ISO 4437？3 respectively.Valves made from materials other than PE, designed for the supply of gaseous fuels conforming to the relevant standards can be used in PE piping systems according to ISO 4437 series, provided that they have PE connections for butt fusion or electrofusion ends, including integrated material transition joints, conforming to ISO 4437-3.It also specifies the test parameters for the test methods referred to in this document.In conjunction with parts 1, 2, 3 and 5 of the ISO 4437 series, this document 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:a) a maximum operating pressure (MOP) up to and including 10 bar[1] at a reference temperature of 20 °C for design purposes;NOTE 1 For the purpose of this document and the references to ISO 8233, MOP is considered to be nominal pressure.b) an operating temperature between？20 °C to 40 °C.NOTE 2    For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in ISO 4437？5.This document covers valve bodies designed for connection with pipes with a nominal outside diameter d_n ≤ 400 mm. [1] 1 bar = 0,1 MPa =10⁵ Pa; 1 MPa = 1 N/mm².

标准预览图