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ZS model Fire sprinkler ZS model glass bulb fire sprinkler is key components in automatic sprinkler system. It plays detecting fire hazards and extinguishing fire via automatic water spraying. It is widely used in various civil buildings and high civil / industrial buildings what are sorted as low, medium or high fire hazard protected area. Structure ZS model glass bulb fire sprinklers consist of glass bulb, copper alloy and sealing pieces. Sprinkler frame is refined from copper alloy what makes it strong hardness and corrosion resistance. It is polished and chrome plated. All kinds of models are available for users’ choice. Glass bulb what is sensitive units and sealing gasket both adopt well imported material, corrosion and aging resistant. Glass bulb is fast, reliable and sensitive. Technical Parameter Sprinkler threaded and flow character Nominal Diameter Connecting threaded Flow Coefficient K 15mm, 1/2inch R1/2 80±4 20mm,3/4inch R3/4 115±6 Sprinkler model ZSTZ15-57 ZSTZ15-68 ZSTZ15-79 ZSTZ15-93 ZSTZ15-141 ZSTZ15-182 Rated Operation Temperature (centigrade) 57 68 79 93 141 182 Rated Operation Temperature (centigrade) 27 38 49 63 111 152 Glass bulb color orange red yellow green blue purple Response Quick response or standard response Note: Glass bulb diameter: 5mm, 3mm