1、对于公称压力PN≥1.6MPa、DNl25～200采用内旁通结构；DN250～500采用带外旁通阀结构。其目的是减小阀前、阀后的压力差以避免高流速、高冲刷以及防止产生高温，氧气管网的运行，同时也减小了操作力矩。
1. For nominal pressure PN ≥ 1.6MPa and DNl25-200, an internal bypass structure is used; DN250-500 adopts an external bypass valve structure. The purpose is to reduce the pressure difference between the front and back of the valve to avoid high flow velocity, high erosion, and prevent the generation of high temperatures, ensuring the safe operation of the oxygen pipeline network, while also reducing the operating torque.
2、介质流向：PN≥1.6MPa、DN≤100介质由阀瓣下方流入阀瓣上方(即低进高出)，DN≥125介质由阀瓣卜方流入下方(高进低出)o对于DN≥125的阀门采用介质高进低出的流向，一方面足内旁通阀结构上的需要，另一方面由于介质压力的作用使阀门的关闭力减小。
2. Medium flow direction: PN ≥ 1.6MPa, DN ≤ 100 medium flows from below the valve disc to above the valve disc (i.e. low inlet and high outlet), DN ≥ 125 medium flows from the valve disc to below (high inlet and low outlet). For valves with DN ≥ 125, the medium flow direction is high inlet and low outlet, which meets the structural requirements of the bypass valve and reduces the closing force of the valve due to the pressure of the medium.
3、该阀设有导静电装置，可避免因静电产生火花。
3. This valve is equipped with an electrostatic safety device to avoid sparks caused by static electricity.
4、与普通截止阀相比，氧气管路用截止阀的支架部分采用全封闭式结构，且压紧填料时可以打开支架上的防护盖板，起到了防油防尘的作用。并有明显的禁油标记。
4. Compared with ordinary globe valves, the bracket part of the globe valve for oxygen pipelines adopts a fully enclosed structure, and the protective cover plate on the bracket can be opened when pressing the packing, playing a role in preventing oil and dust. And there is a clear oil ban mark.
5、全部零件采用严格的脱脂处理。
5. All parts undergo strict degreasing treatment.
6、防燃阻火：主要部件的材质为阻燃性极好的铜合金，属不可燃材料，即使与高速气流中的固体粒子碰撞也不会产生火花。因此，本阀具有防燃阻火性能
6. Flame retardant and flame retardant: The main components are made of copper alloy with excellent flame retardancy, which is a non combustible material and will not generate sparks even when colliding with solid particles in high-speed airflow. Therefore, this valve has flame retardant and flame retardant performance
7、可靠：本阀带有防尘、防水、防油污装置，所有与氧气接触的阀件在组装前均经过严格脱脂和禁油措施，填料材质为聚四氟乙烯，可确保使用时可靠。
7. Safe and reliable: This valve is equipped with dust, water, and oil resistant devices. All valve components in contact with oxygen undergo strict degreasing and oil prohibition measures before assembly. The packing material is polytetrafluoroethylene, which can ensure safety and reliability during use.
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