前言这是CSA/ANSI HGV 4.2第二版，用于分配压缩气态氢的软管。它取代了2013年出版的前一版。本版CSA HGV 4.2已更新，包括对新技术的要求；符合国际标准ISO 19880-5:2019《气态氢-加油站-第5部分:分配器软管和软管组件》的要求；并已重新格式化，以符合CSA集团当前的编辑惯例。CSA集团承认，该标准的制定部分是由于加拿大自然资源部的财政支持。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。 本标准已被美国国家标准协会（ANSI）批准为美国国家标准。本标准适用于本标准规定范围内的合格评定。范围1。1概述1。1.1包括本标准规定了用于向车辆分配压缩气态氢的软管和软管组件的材料、设计、制造和测试要求。1.1.2本标准的适用性本标准适用于用于将压缩气态氢分配器连接到加油嘴的软管组件，包括带有集成排气软管的软管组件。1.1.3例外情况本标准不适用于a）作为车载燃油存储系统一部分使用的软管和软管组件；b） 大容量存储传输；柔性金属软管。 1.2新设计和历史设计本标准适用于新软管组件设计和使用新材料制造的现有设计。它不适用于有使用历史的现有软管设计、由有使用历史的现有材料制成的软管，或由行业公认组织（如ASME、CGA、MSS和SAE）认证用于压缩气态氢应用的软管。注:本条款中的除外条款并不妨碍制造商将本标准用于现有软管和有使用历史的软管组件的认证目的。1.3要求和冲突的优先顺序1。3.1要求的优先顺序应用特定标准取代本标准的要求。1.3.2冲突如果本标准与联邦、省、州或地方要求发生冲突，以政府要求为准。 1.4本标准中的术语“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）以定义其应用。1.5测量单位——在本标准中，以国际单位制给出的数值为记录单位。 括号中给出的值仅供参考和比较。除非另有说明，本标准中提及的所有压力均为表压。

PrefaceThis is the second edition of CSA/ANSI HGV 4.2, Hoses for dispensing compressed gaseous hydrogen. It supersedes the previous edition published in 2013. This edition of CSA HGV 4.2 has been updated to include requirements for new technology; harmonizes requirements with the International Standard, ISO 19880-5:2019, Gaseous Hydrogen - Fuelling Stations - Part 5: Dispenser Hoses and Hose Assemblies; and has been reformatted to comply with current editorial practices at CSA Group. CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of Natural Resources Canada.This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. This Standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.Scope1.1 General1.1.1 InclusionsThis Standard specifies requirements for materials, design, manufacture, and testing of hoses and hose assemblies used for dispensing compressed gaseous hydrogen to vehicles.1.1.2 Applicability of this StandardThis Standard applies to hose assemblies used for connecting compressed gaseous hydrogen dispensers to fuelling nozzles and includes hose assemblies with integrated vent hoses.1.1.3 ExclusionsThis Standard does not apply toa) hoses and hose assemblies used as part of vehicle on-board fuel storage systems;b) bulk storage transfer; orc) flexible metal hoses.1.2 New and historical designsThis Standard is intended for new hose assembly designs and existing designs made with new materials. It is not intended for existing hose designs with history of use, hoses made of existing materials with history of use, or hoses qualified by industry-recognized organizations (e.g., ASME, CGA, MSS, and SAE) for use in compressed gaseous hydrogen applications. Note: The exclusions in this Clause do not preclude manufacturers from using this Standard for certification purposes for existing hoses and hose assemblies with history of use.1.3 Precedence of requirements and conflicts1.3.1 Precedence of requirements Application-specific standards supersede the requirements of this Standard.1.3.2 Conflicts In case of conflict between this Standard and federal, provincial, state, or local requirements, the governmental requirements take precedence.1.4 Terminology In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.1.5 Units of measure The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. Unless otherwise stated, all references to pressure throughout this Standard are gauge pressures.