完全开启排气针形阀直到从排气连接处的滴漏停止为止。

Open vent needle valve fully until dripping from vent connection stops.

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在把盖子重新安装在齿轮执行机构上之前，确认阀瓣位于全开位置处30度的地方。

Before reassembling cover to gear operator, make sure disc is approximately 30 degrees away from full open position.

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因此，建议开展高原环境下单阀试验标准和试验方法的系统研究，为高原铁路安全开行提供保障。

So, develop the system research for the single distributing vale experiment method and standard will safeguard for the tableland railway.

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