Oxygen flows through the pressurereducingregulator and shut off valve to the masks.
氧气通过减压调节器和关断活门流向氧气面罩。
2
Use a pressurereducingregulator or separate control valve to safely discharge gas from cylinder.
使用减压调整器或单个的控制阀来安全地从钢瓶中排出气体。采用止回阀，防止回流入钢瓶。
3
Use a pressurereducingregulator or separate control valve to safely discharge gas from cylinders. Use a check valve to prevent reverse flow into the cylinder.