Fire fighting nozzle units

A nozzle unit for installation in a wall of a building space, said nozzle unit comprising a tubular body adapted for mounting to extend through an opening in said wall with its opposite ends openable and accessible at either side of the wall and with at least the outer end formed with means for coupling a fluid conducting supply conduit to said unit, and means mounting a cover on the inner end of said body including a frangible connection providing for the cover being blown off the body by pressure of fluid delivered from a conduit connected to said outer end of the body.

In a building structure comprising a series of rooms at different levels, each room having a ceiling wall and a floor wall and flow control nozzle units mounted in said walls, each of said units being accessibly openable externally of the room and formed there for coupling to a fluid conducting conduit, the ceiling wall of at least one of said rooms being common with the floor wall of the adjacent room directly above it, and there being a nozzle unit in that common wall with its opposite ends opening into the respective rooms, and each end of the unit being formed for coupling to a fluid conducting conduit whereby a fire in either room may be fought by firefighters in the adjacent room, covers on the ends of the nozzle units substantially flush with the wall surfaces in the respective rooms, said covers being removable and each cover having such connection to the nozzle that it willbe blown out by fluid pressure within the unit when a fluid supply hose is coupled to the other end of the unit.

In a building structure comprising a room having a ceiling wall, a floor wall and side walls, a flow control nozzle unit mounted on at least one wall of said room, with one end opening into the room and its opposite end opening externally of the room, and said opposite end of the unit being formed for coupling to a fluid conducting conduit, a cover mounted on said one end of the nozzle unit substantially flush with the side wall surface within said room, said cover having such relatively frangible connection to the nozzle unit that it will be blown out by fluid pressure within the unit when subjected to water pressure exerted by a fluid supply hose coupled to said opposite end of the unit.

A nozzle unit for installation in the wall of a room or other space, said nozzle unit comprising a tubular body adapted for mounting to extend through an opening in said wall with its opposite ends openable and accessible at either side of the wall and with at least the outer end formed with means for coupling a fluid conducting conduit to said unit, said body containing a removable and replaceable insert tube internally formed to define a flow passage imparting a desired flow pattern to fluid passing therethrough and said body comprising similar end flanges adapted to seat upon opposite sides of said wall and being internally formed with coupling elements for connection with said conduit.

A nozzle unit for installation in the wall of a room or other space, said nozzle unit comprising a tubular body adapted for mounting to extend through an opening in said wall with its opposite ends openable and accessible at either side of the wall and with at least the end at the outer side of the wall being formed with means for coupling a fluid conducting conduit to said unit, said body comprising detachably interconnected axially separable tubular opposite end portions, a preformed flow control liner tube extending through the body, and linear holding means on said tubular portions, both of said tubular end portions of said body having internal threads providing for coupling of a fluid conduit, and said liner holding means being located axially inwardly of said threads in abutment with the ends of the liner.