| 摘要 |
<p>Disclosed is a recessed firefighting nozzle device for a helideck. According to an embodiment of the present invention, the recessed firefighting nozzle device for a helideck comprises: a flange unit coupled to an upper surface of a pancake unit having a receiving groove recessed downward from the upper surface of the pancake unit; and a nozzle unit including a body unit having a pipe structure such that a firefighting medium can flow through, and a head unit located on an upper portion of the body unit projected upward to spray the firefighting medium when the firefighting medium is supplied to the body unit, wherein the head unit is located on the receiving groove of the flange unit and installed below the upper surface of the pancake unit.</p> |
