ISO 23826:2021 气瓶 球阀 规范和试验
标准编号：ISO 23826:2021
中文名称：气瓶 球阀 规范和试验
英文名称：Gas cylinders — Ball valves — Specification and testing
发布日期：2021-10
标准范围
本文件规定了用于以下用途的球阀的设计、型式试验、标记、制造试验和检查要求:可再填充的可运输气瓶、压力桶和管道的封闭件；气缸组的主阀；用于货物运输装置[例如拖车、电瓶车、多元气体容器]的阀门；其输送压缩气体、液化气体和溶解气体。笔记？1？在本文件中，术语“阀”与“球阀”的含义一起使用。本文件不适用于以下情况的球阀:ISO中定义的氧化气体？10156;有毒气体（即ISO？10298中列出的LC50值≤？5？000？ppm的气体单气瓶、压力桶和管道用乙炔。笔记？2？排除氧化性气体的原因是使用球阀作为高-已知用于氧化气体的压力钢瓶会导致特定的点火危险？无法通过球阀设计或型式测试合理缓解。安全隐患既涉及球阀本身，也涉及任何下游设备。笔记？3？将乙炔排除在单个气瓶、压力桶和管道之外的原因是乙炔分解的风险无法通过球阀设计或型式试验合理地降低。本文件不适用于液化石油气（LPG）球阀、低温设备、便携式灭火器和呼吸器钢瓶。笔记？4？低温容器阀门的要求在ISO？21011.笔记？5？除本文件中给出的要求外，固定消防系统用快速释放阀的某些具体要求在ISO？16003.
This document specifies design, type testing, marking, manufacturing tests and examinations requirements for ball valves used as:
- closures of refillable transportable gas cylinders, pressure drums and tubes;
- main valves for cylinder bundles;
- valves for cargo transport units [e.g. trailers, battery vehicles, multi-element gas containers (MEGCs)];
which convey compressed gases, liquefied gases and dissolved gases.NOTE 1 In this document, the term “valve” is used with the meaning of “ball valve”.This document does not apply to ball valves for:
- oxidizing gases as defined in ISO 10156;
- toxic gases (i.e. gases listed in ISO 10298 having an LC50 value ≤ 5 000 ppm
- acetylene for single gas cylinders, pressure drums and tubes.
NOTE 2 The reason for the exclusion of oxidizing gases is that the use of ball valves as closures of high-pressure cylinders for oxidizing gases is known to lead to specific ignition hazards that cannot reasonably be mitigated through the ball valve design or type testing. Safety hazards concern both the ball valve itself and any downstream equipment.NOTE 3 The reason for the exclusion of acetylene for single gas cylinders, pressure drums and tubes is that the risk of an acetylene decomposition cannot reasonably be mitigated through the ball valve design or type testing.This document does not apply to ball valves for liquefied petroleum gas (LPG), cryogenic equipment, portable fire extinguishers and cylinders for breathing apparatus.NOTE 4 Requirements for valves for cryogenic vessels are specified in ISO 21011.NOTE 5 Certain specific requirements for quick-release valves for fixed fire-fighting systems in addition to those that are given in this document are specified in ISO 16003.
标准预览图
