螺旋闸门用于建材、冶金、矿山、电力、化工、玻璃、轻工、粮食等行业的库顶、库底及进出口等。是控制流量变化较大，启动频繁，切断迅速的理想设备。

This valve is widely used at the   topbottom of store housecarry port in metallurgical, mining, building material, food, chemical industries etc. It is the ideal equipment to control a great changing flow, to openclose frequentlyto stop quickly.

螺旋闸门（插板阀）结构特点：