Because the nozzle can be installed in the ceiling hidden within the cover matches the color of color and the ceiling, when in the provision of protective security, people easily feel the presence of sprinklers, which are widely installed in the luxurious decoration, beautiful places and pay attention to because of decoration which led to the ceiling too low or crowded, cargo handling frequent, easy to crash into the exposed head of the place. Such as: high-rise hotels, shopping malls, entertainment facilities, office buildings and so on. 
 Mainly by the glass ball of the nozzle sprinklers, support ring, composed of shell and cover, and between the shell and cover with low melting point fusible alloy welding fastening. Through the pipe network installed in the protection area, with fire detection and sprinkler effect. Fire protection district when the environment temperature, reaching the melting point of fusible alloy, the cover off first from the shell, so that the nozzle exposed, when the temperature continued to rise to reach operating temperature when the glass ball, glass ball will burst, so seal off, open the press to set the sprinkler nozzle shape of playing in the fire protection area. 
 Nominal operating temperature (℃): 68 
 Glass Ball Color: Red 
 Maximum ambient temperature (℃): 38 
 Cover operating temperature (℃): 58 
 Flow coefficient K: 80 
 Sealing test pressure (MPa): 3 
 Response Time Index RTI (ms) 1 / 2: φ5 glass ball: 75 φ3 glass ball: 34 
 Connecting Thread: R1 / 2