本SAE航空航天标准（AS）规定了商用飞机上使用的两种永久安装的高压12800 kPa（1850 psig）和13800 kPa（2000 psig）氧气系统气瓶填充阀的设计、构造和性能的最低标准。有关超出本文件范围或详细程度的要求，请参考买方规范。其中一个阀门有一个可调的压敏关闭阀，用于自动控制系统中正确氧气量的最终压力。第二个阀门具有自动关闭功能，设计用于在维护人员未在正确压力下停止系统加注时限制系统过压。 填充阀的目的是控制填充速率，以将压缩加热引起的温度上升限制在可接受的值，防止氧气回流，并防止吸入可能导致系统污染的异物。请注意，一些加注阀具有集成的供应管路压力调节器；有关供应线调节器的更多信息，请参阅AS1248

This SAE Aerospace Standard (AS) defines minimum standards of design, construction, and performance for two types of permanently installed, high pressure 12,800 kPa (1850 psig) and 13,800 kPa (2000 psig) oxygen system cylinder fill valves used in commercial aircraft. Refer to Purchaser's Specification for requirements which are beyond the scop or level of detail provided in this document.One valve has an adjustable pressure sensitive closing valve to automatically control the final pressure for a correct amount of oxygen in the system. The second valve incorporates an automatic shutoff feature designed to limit system overpressurization in the event maintenance personnel do not stop system filling at the correct pressure. The intent of the fill valves is to control the rate of fill to limit the rise in temperature caused by compression heating to acceptable values, prevent oxygen back flow and prevent the ingestion of foreign matter that could cause contamination of the system.Note that some fill valves have integral supply line pressure regulators; for more information on supply line regulators, see AS1248