Heptafluoropropane (HFC-227ea) fire extinguishing system is currently in China and elsewhere has been widely used. Fire extinguishing agent is a colorless, odorless gas, the depletion of ozone layer on the self-potential is zero, in line with environmental requirements, a clean, low toxicity, good insulation, high performance characteristics of fire, fire extinguishing agent is an ideal substitute . 
 Fire extinguishing system, with the design parameters of complete, comprehensive, accurate and reliable long-term storage of work does not leak, installation is simple and easy operation and maintenance of the system consists of automatic alarm controller, storage device, the valve drive select valve, one-way valves, pressure markers, frames, nozzle, pipe network and other components. According to requirements, the system can be composed of independent units, combined distribution system were implemented on a single area and multi-zone fire protection. Mainly used in computer rooms, telecommunications centers, underground engineering, offshore oil, libraries, archives, library treasures, power distribution room, fire protection and other important places. 
 Heptafluoropropane filling density: ≤ 1150kg/m3 
 Drive gas filling pressure (20 ℃ pm): 
 Maximum use of the system working pressure: 
 Extinguishing agent injection time: ≤ 10s 
 Heptafluoropropane storage container: 40,70,80,90,100,120,150,180 
 Extinguishing System Power Supply: AC 220V/50Hz 
 Standby power supply: DC 24V 
 Power consumption: vigilance ≤ 15W, alarm ≤ 30W 
 Between the ambient temperature storage bottles: -10 ~ +50 ℃ 
 Reserve the lowest temperature: -10 ℃ 
 Volume of the largest single protected area: 2000m3 
 Start: auto, electrical manual, mechanical emergency operation