RVHI/Z45X-16附开度指示弹性软密封闸阀

 
　　附开度指示弹性软密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．