Be responsible for maintaining gas pipe, valve and other accessories.
负责煤气主管道、阀门及辅件的维修保养。
Be responsible for maintaining gas pipe, valve and other accessories in boiler room.
负责锅炉房内煤气管道、阀门及辅件的维修保养。
The face seals provide constant guiding throughout the valve stroke, maintaining continuous contact with the gate.
在阀门闸板运动的全过程中，密封面都对闸板提供恒定的引导，保持与闸板连续稳定的接触。
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