1.Description
The sprinkler is suitable for use in luxuriously decorated and beautifully lit venues. For example, high-end hotels, luxury restaurants, shopping malls, entertainment centers, etc. It can also be installed in places where crowds are crowded, cargo is frequently transported, and it is possible to collide with exposed nozzles at any time or to avoid human factors.
Product standard: GB5135.1 "Automatic sprinkler system Part 1: Sprinkler"
Design Specification: GB50084 "Design Specification for Automatic Sprinkler System"
Acceptance specification: GB50261 "Code for construction and acceptance of automatic sprinkler system"

2.Characteristics
The product consists of a sprinkler, a screw sleeve, an outer cover and an outer cover. The nozzle and the screw seat are installed together on the pipe of the pipe network, and then the outer cover is installed. The outer cover and the outer cover are welded together by a fusible alloy. When the fire occurs, the ambient temperature rises and reaches the melting point of the fusible alloy. The outer cover automatically falls off. As the temperature continues to rise, the action elements of the nozzle inside the cover act, thus opening the nozzle to automatically spray water.

3. Technical performance
(1) Nominal diameter: Φ15mm; interface thread: R21/2″
(2) Flow coefficient: K=80
(3) Rated working pressure: 1.2MPa
(4) Installation method: drooping
(5) Sensitivity: Φ3mm (quick response), Φ5mm (special response), fusible alloy (quick response)
(6) Nozzle rated operating temperature and color standard:

Note: The cover cover surface should not be coated.

4、Product structure and dimensions

• K ZSTDY 15-68℃（φ3mmGlass ball）
• KY ZSTDY 15-68 ℃
• RC ZSTDY 15-93℃（φ5mmGlass ball）
• ZSTDY15-68℃（φ5mmGlass ball）
• Sprinkler Nozzle ZSTDY80-68°C Q5 Change Confirmation Inspection Report
• Concealed sprinkler head 80-68 Q3 change inspection report