总是慢慢地开启二氧化碳钢瓶阀门。
总是慢慢地开启钢瓶阀门。
当不需要产品输出时，总是关闭钢瓶阀门。
Always close the cylinder valve when product delivery is not needed.
警告：不正确使用钢瓶阀门会导致严重伤害！
WARNING: Improper use of cylinder valves may result in serious injury!
关闭钢瓶阀门。
如果钢瓶阀门难于操作，停止使用并同供应商联系。
Discontinue use and contact the supplier if a cylinder valve is difficult to operate.
站得象演示得那样（见图2），使钢瓶阀门在你和调整器之间。
Stand as shown (see Fig. 2) with the cylinder valve between you and the regulator.
大多数压缩气体钢瓶要求安装至少一个阀门。
Most compressed gas cylinders require the installation of at least one valve.
替换钢瓶排气口密封和阀门帽。
替换最初同钢瓶一起运输的阀门排气口和保护帽。
Replace any valve outlet and protective caps originally shipped with the cylinder.
替换最初同钢瓶一起运输的阀门排气口和保护帽。
Replace any valve outlet and protective caps originally shipped with the cylinder.
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