They are Classified according to heat sensitive components:
1 Thermo Glass bulb sprinkler
The heat sensitive element in the release mechanism is a sprinkler head with a glass ball. When the nozzle is heated, the working fluid in the glass ball will cause the ball to burst and open.
The glass ball sprinkler is not suitable for use in the open air, and the other is not to be used in an environment below 4℃
2 Fusible elements sprinkler
The heat sensitive element in the release mechanism is a sprinkler head of fusible element. When the nozzle is heated, it opens due to the melting and falling off of the fusible components. Mainly used in places with low ambient temperature, such as unheated warehouses or underground garages in northern my country.
In use, glass ball sprinklers are usually seen, which are installed in places where automatic sprinkler systems can be used to extinguish fires, such as shopping malls, underground garages, etc.