The bulbs which is the one of the most important parts of the fire sprinkler head key element of the glass tube extinguishing system. The frangible bulb is simple to use, comprising a small thermo bulb made of glass containing a chemical liquid that will expand rapidly when exposed to rising temperatures, bursting the glass fire bulb at an accurately pre-determined temperature, thereby activating the sprinkler.
Mounted in locations without suspended ceilings with the deflector pointing upwards. The water hits the deflector and sprays downwards with a conical expansion. It can be used for wet, dry and pre-action systems.