When oil begins to flow from end of hose, close bleed valve, remove hose, then tighten bleed valve.
当石油开始流从年底，胶管，关闭排气阀，删除胶管，然后收紧流血阀。
At the end of the shift or work day, close the cylinder valve and bleed the pressure off the regulator and torch equipment.
在下班或工作日结束的时候，关闭钢瓶阀门，放出调整器和吹管设备内的压力。
At the end of the shift or work day, close the cylinder valve and bleed the pressure off the regulator and torch equipment.
在下班或工作日结束的时候，关闭钢瓶阀门，放出调整器和吹管设备内的压力。
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