This paper also provides economic analysis and detailed features of the overload valve.
本文还详细介绍了补汽阀的特点，提供了补汽阀的经济分析数据。
Screw pump should be in suction stop valve fully open under the condition of starting, in case of overload or empty.
螺杆泵应在吸排停止阀全开的情况下起动，以防过载或吸空。
The slide adopts hydraulic overload protecting device, which controlled imported pump valve;
滑块采用液压过载保护装置，进口泵阀控制；
The slide adopts hydraulic overload protecting device, which controlled imported pump valve;
滑块采用液压过载保护装置，进口泵阀控制；
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