| 摘要 |
PURPOSE: An apparatus for sensing the water flow of a fire alarm valve is provided to suppress fire at an early stage by preventing fire fighting water amount sprayed through a sprinkler from decreasing due to the installation of a fire alarm valve. CONSTITUTION: An apparatus for sensing the water flow of a fire alarm valve comprises a clipper(23), a permanent magnet(24), and an installing unit. The clipper is installed in a housing(21) around a shaft(22) to be rotatable. The permanent magnet revolves according to the opening and shutting of the clipper. A mounting device fixes a lead switch to the housing to be close the permanent magnet. The mounting device comprise a body(28), a cap(29), and a lock nut(30). The cap is welded to be fixed in the housing. |
