信號彈性座封閘閥應用于自動噴水消防管路系統，來監控供水管路，可以遠地指示閥門開度。
    Block closed vaIve signal flexibility automatic sp rinkler piping system used to control water pipe，valve opening inst ructions can be distant

    附開度指示彈性座封閘閥應用于消防系統，如果閘閥安裝位置離地面較高時，一般使用明桿閘閥，可以明顯指示閥門開度，若安裝位置較低，則需用附開度指示閘閥。
  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．