Sprinklers can be used for detecting a fire and discharging water to extinguish the fire. They are the main components of the water sprinkler systems ,which are widely used. Glass bulb sprinkler is a main element in automatic sprinkler system to detect fires, control fires and put out fires. It is widely used in places that are suitable for extinguishing fires with water, such as high rise building, warehouse, hotel, emporium and underground project. It has advantages of good structure, stable performance, safety reliability, good corrosion resistance and long usage life etc. Besides, it can be concealed in ceiling with decoration pan to keep place's elegance.