... Concealed fire sprinkler, fire sprinkler, fire safety. 1, senstive, reliable operation, fast response 2.corrosion resistance ZS model Fire sprinkler: ZS model glass bulb fire ... sprinkler system. It plays detecting fire hazards and extinguishing fire via automatic water spraying. It ... medium or high fire hazard protected area. Structure ZS model glass bulb fire sprinklers consist of glass bulb ...