Heptafluoropropane is high-effect、quickly and no second contaminator fire extinguishing agent. That is good stuff with substitute Halon for now. Therefore we had developed ZQPZ (Heptafluoropropane Fire fighting system).
The ZQPZ-system include fire extinguishing agent Storage Cylinder、Container Valve、Driving Cylinder、Electromagnetic Driver、Selective Valve、Liquid Check Valve、Gas Check Valve、safety Valve、Pressure Signal Sender、High pressure hose pipe、Manifold、Network of Pipe、Control Air Pipeline、Nozzle、Automatic fire fighter controller and other unit. The ZQPZ-system lay pressure is 4.2MPa in 20℃, the Max-pressure is 5.3MPa on 50℃, after spraying no leftover, low toxicity, better use in public area.

2. Fire extinguishing agent trait
1) The heptafluoropane is gas what it is achromatism, no sapor and insulated, answer for demand of protect entironment.
2) The ZQPZ-system use Physics mode and Chemistry mode to put out of fire.That is fire extinguishing agent what it is new type, high-effect and low toxin. The system just needs a small space for build.
3) The heptafluoropane fire extinguishing agent insulated, exclusion water so that can not damage wiring, tape, etc.
4) Maximum allowable concentration is 9%, innocuity for human.

3. Scope of Application
1) Use it in A, B and C fire modal, safety and availability for fire fighting in public area.
2) It is suitable for use in such occupancies that there must be requested no marks or there has difficulties to clean the residua after spraying fire extinguishing agent.
3) Protection area where there have valuable articles, precious jewelries, precious documents and soft and hardware, etc. It is particularly suitable for use in places, such as controlling machinery-room for telecommunications, controlling machinery-room for airport, the coffers of a bank, archives establishment, library and computer room, etc.
4) The temperature of protection area must be -10℃ to 50℃.
Ⅱ. Flow Chart of Fire extinguishing System

Ⅲ. Composition and Parameter of System

1. Composition & Classification of Fire extinguishing System
Heptafluoropropane Automatic Fire extinguishing System is composed of fire alarm system, fire extinguishing controlling system and fire extinguishing device, while fire extinguishing device can be divided into tow parts: fire extinguishing storage device and pipe networks, etc.

Unit Independent System- It is composed of a set of extinguish ant storage device corresponding to a set of pipe network system, which can only protect one protection area.

Combined Distribution System- It is composed of a set of fire extinguishing agent storage device corresponding to several sets of pipe network system, which can protect several protection areas. Combined distribution system is mainly composed of three parts: fire alarm system, fire extinguishing controlling system and fire extinguishing device.

3. Technical Parameters
Fire extinguishing method: Submerge method
Load Density: ≤1.15Kg/L
Cylinder cubage: Gas cylinder 70L, 100L, 120L; Driving Cylinder 2.7L, 4L, 7L
Normal Pressure: 4.2MPa
Mix. Pressure: 5.3MPa
Startup electric current: DC24V 1.1A
Startup Method: Electric Startup(DC24V); Gas Startup(Air pressure≥2.0Mpa);
Emergency Manual Startup(Power≤150N)
Startup Gas: N2
Driving Cylinder working Pressure: 7.5MPa
Fire extinguishing agent Spray Time: ≤10S