信号弹性座封闸阀应用于自动喷水消防管路系统，来监控供水管路，可以远地指示阀门开度。
    Block closed vaIve signal flexibility automatic sp rinkler piping system used to control water pipe，valve opening inst ructions can be distant

    附开度指示弹性座封闸阀应用于消防系统，如果闸阀安装位置离地面较高时，一般使用明杆闸阀，可以明显指示阀门开度，若安装位置较低，则需用附开度指示闸阀。
  Block elastic closu re valve attached instructions for opening fi re systems，and if the valve located high off the g round normally use that rod valve，the valve opening inst ructions clea rly，if low instalIation Position requi red with instructions a~ached valve opening．