| 摘要 |
A dry visor intended to be mounted in a fire protection installation, of the type including a network of vacuum sprinklers. The visor includes an elongate body having, at one of its ends, a connecting piece for coupling to piping, the connecting piece including a first nozzle capable of making a connection between the visor and the piping. The visor includes a shutoff member for shutting off the first nozzle. The other end of the visor bears a sprinkler. A connection is provided between the shutoff member that shuts off the first nozzle and a shutoff member that shuts off the nozzle of the sprinkler. The connection is configured to move in such a way as to cause a shutting-off position of the shutoff member of the sprinkler nozzle to coincide with a shutting-off position of the shutoff member that shuts off the first nozzle. |
