ABSTRACT
Water sprinklers provide an automatic spray dedicated to the area of fire outbreak. Sprinkler heads have temperature sensitive elements that respond immediately to heat, discharging the contents of the water main to which they are attached. When a fire occurs, the quartzoid bulbs shatter and compressed air in the pipeline is released allowing a diaphragm inside the deluge control valve to open and discharge water through the open pipe to the projectors. Multiple control system a heat sensitive sealed valve controls the flow of water to a small group of open sprayers attached to a dry pipe. Sprinkler pipe installations downstream of the alarm and control valves should be sized by hydraulic calculation, with regard to system pressure and friction losses. A drencher fire control system provides are a discharge in of water over to roofs, walls and windows to prevent fire spreading from or to adjacent buildings.
