• CO2 Fire Fighting system :

company has two kinds: fully submerged extinguishing system and local application extinguishing system. According to its using methods, it can be divided into two kinds: combined distribution system and unit independent system.

Fully submerged extinguishing system: It can adopt this kind of extinguishing method when cannot estimate the position of fire in the protection area. It is a gas extinguishing system that sprays a certain concentration of extinguishing agent to charge the whole protection area evenly

Local application extinguishing system: For local site or single equipment in the non-blocked or blocked room, it can adopt this kind of extinguishing method to spray extinguishing agent to the protection object for some time.

Unit Independent System: One set of extinguishing agent storage device and one set of network system protect one protection area.

Carbon Dioxide (CO2) doesn't harm to most substances and doesn't leave its trace or has no pernicious effects after fire extinguishing, which is suitable for putting out fires caused by various combustible or inflammable liquid and solid substances, and for gas fire in which gas supply can be cut down before conducting extinguishing. CO2 as a kind of fire extinguishant, takes such characteristics as non-conduction, non-contamination, no water damage, good extinguishing efficiency and low price, ect. It is especially suitable for fire protection of precious material storeroom for books and files, ect., computer room, power substation and switch board room, communication room, garage, ship's hold, central control room and other places.

High-pressure CO2 automatic fire extinguishing system is composed of fire detector, fire alarm controller, fixed fire extinguishing device, pipeline and nozzle, ect. This system can be designed into unit independent system or combined distribution system according to the user's requirements, which can extinguish a fire occurred in single or multi-protection area through adapting fully submerged or local application fire extinguishing mode. When a fire occurs, the fire alarm controller will conduct logic analysis to the fie signal detected by the heat detector and smoke detectors and send out fire extinguishing command to turn on container valve so that CO2 will be sprayed into the protection area through the valve, pipeline and nozzle, and then it will quickly gasify, lower the temperature and completely cut off the oxygen to extinguish the fire. Every group of gas cylinder of this system is equipped with the weight-reduction alarm device. When the weight of the fire extinguishant is reduced by 10% because of leakage, ect., the system will send out the acousto-optic alarm signal so that the gas cylinder can be timely maintained and recharged.

Flow chart of CO2 Automatic Fire Extinguishing System :

• Composition of fire Extinguishing System :

CO2 fire extinguishing system provided by our company isdivided into two types:
1- fully submerged fire extinguishing system
2- Local Application Fire Extinguishing System.
Also can be divided into two types according to different usage:
3- Combined Distribution System
4- Unit Independent System.

- Fully submerged fire extinguishing system.
1- This kind of fire extinguishing mode can be adopted when the specific position of the fire can't be forecasted in the protection area. It isa kind of gas fire extinguishing system which can spray a certain concentration of extinguishing to the protection area within the set time and make the whole protection area evenly filled with theextinguishant.

2- Local Application Fire Extinguishing System.
This kind of fire extinguishing mode can beadopted to extinguish a fire on the partial place or theindividual equipment and article in the unifixedclosed or greatly closed space. It is a kind gas fire extinguishing system which can directly spray extinguishant to the protective object in the designed spray strength and last for some time. 

3- Combined Distribution System.

It is composed of a set of public extinguishant storage device corresponding to several sets of pipe network system, which can protect several protection areas.

4- Unit Independent System.
It is composed of a set of public extinguishant storage device corresponding to several sets of pipe network system, which can only protect one protection area.

Figure explain Combined Distribution System

Figure explain Unit Independent System

• FM-200 Fire Fighting  System :

Montreal Agreement in1986 and decided to stop using halon extinguishing agent. FM200 extinguishing agent has high extinguishing efficiency and no contamination. It is the ideal substitute for halon extinguishing agent. Therefore,  FM200 automatic extinguishing system (HFC-227ea).
it is composed of storage cylinder, liquid check valve, high-pressure hose pipe, header pipe, selective valve, network, sprinkler and automatic extinguishing controller.

FM-200® , chemically known as heptafluoropropane, is an alternative fire suppression system agent manufactured in the United States by Great Lakes Chemical Corporation. DuPont™ also manufactures heptafluoropropane (HFC-227ea) and markets to the fire protection industry under the trademark FE-227™ .It is a replacement for the ozone depleting Halon 1301 used extensively before 1994.
HFC-227ea has no ozone depletion potential. Its ODP is zero. HFC-227ea has found by leading toxicologists to be safe for use when people are present. Just as with Halon 1301, people can be exposed to normal extinguishing concentrations of without any fear of health problems.Often HFC-227ea systems are employed to protect critical installations formerly protected by Halon 1301. These include:

• Data Processing Centers
• Telephone Switches
• Process Control Rooms
• Art and Historical Collections
• Facilities where water damage from sprinklers must be avoided at all costs

Adventages:
FM-200® Fire Suppression agent was the first environmentally acceptable replacement for Halon 1301. FM-200® has zero ozone depleting potential, a low global warming potential and a short atmospheric lifetime. It is particularly useful where an environmentally acceptable agent is essential, where clean up of other media presents a problem, where weight versus suppression potential is a factor, where an electrically non-conductive medium is needed, and people compatibility an overriding factor.

FM-200® is a colourless, liquefied compressed gas. It is stored as a liquid and dispensed into the hazard as a colourless, eclectically non-conductive vapour that is clear and does not obscure vision. It leaves no residue and has acceptable toxicity for use in occupied spaces at design concentration. FM-200® does not displace oxygen and therefore is safer for use in occupied spaces without fear of oxygen deprivation.

FM-200® is chosen to protect occupied areas such as computer rooms and now the fast expanding telecommunications market. Its low extinguishing concentration of seven percent by volume for Class A risks, its high level personnel safety and absence of toxicity makes it a very attractive option. Very little cylinder storage space is required which can be an important consideration in city centre sites where floor space is at its most expensive
Benefits and Features:
Fast & effective
No significant reduction in oxygen levels
Clean gaseous agent leaving no residue
Zero ozone depleting potential
Low global warming potential
Short atmospheric life span
Electronically non-conductive
Safe for use in fully occupied areas
Minimal storage requirement
Versatile range of containers, nozzle and ancillaries
Extensively tested, recognised and approved worldwide
Effective on site installation

• Automatic Sprinkler fire fighting System :

vertical glass bulb sprinkler is the key part of the automatic sprinkler system. It is used for detecting fire and controlling or extinguishing fire by spraying water automatically. It is widely used fro protecting restaurant, hotel, shop, commercial building, warehouse, underground garage, garment factory and other buildings or mild, middle and serious danger level.

Water Flow Indicator		Water  Test Device
Low Pressure Sprinkler	Wet Type Automatic Sprinkler System	vertical glass bulb sprinkler

• Low Expansion Foam Extinguishing System :

• Low expansion foam extinguishing system that absorbs air and produces volume expansion that is less than 20 times. It is mainly used in places where flammable and combustible fire is produced, stored, transported and used, such as petrochemical enterprise, oil depot, loading and unloading warehouse, wharf, oil extraction platform, hangar and garage. According to its spraying methods, it is divided into: surface inspection, base injection, foam deluge and automatic water foam combined deluge system. It is also divided into fixed, semi-fixed and movable according to its installation mode. Our company mainly manufactures fixed surface application system, foam deluge system and automatic water and foam combined deluge system.

  system is a kind of new high extinguishing efficiency system that combines low times foam proportioning mixing device (with diaphragm) with automatic sprinkler system and selecting foam and water combined sprinkler. It is widely used in places where flammable liquid exists, such as diesel engine room, refinery, oilcan region, crude carrier, gas station and oil extraction at sea or the places where have high danger plant or equipment, such as parking lots, garage, hangar, danger warehouse, power plant, generator room, chemical plant and smelt plant.

• Characteristics: It is capable of putting out oil (flammable liquid) fire quickly and has high extinguishing efficiency. It can save water and low cost of maintenance and service. If selecting acqueous film forming foam concentrate, it can cover the surface quickly and isolates the air to expedite extinguishing time and prevent re-burn.

Surface Injection Low Expansion Extinguishing System.

• Structure: It is a combined system that connects traditional foam deluge system into sealed system. It is mainly composed of power source, pump, wet type alarm valve, foam tank with diaphragm, pressure proportioning mixer, releasing pressure control valve, pressure signal transmitter, water flow indicator, sprinkler (water foam combined), hand emergency valve, various control valve, pipeline and its accessories and fire detecting, alarming and controlling system.
  proportioning mixer, check valve, outlet pipe, adding mouth, water inlet, safety valve, air outlet, pressure discharging mouth, water discharging mouth, sump mouth and nameplate.

• The system consist of:
  1- Pressure air foam proportioner tank  which is Horizontal ( with bladder or without bladder) or vertical (with bladder or without bladder).
  2- Air foam generator which is horizontal or vertical
  3- Foam Nozzle ( air foam sprinkler)
  4- Foam Monitor:
  a) foam/ water combined monitor
  b) Adjustable fire foam monitor
  c) Adjustable fire water monitor
  5- Air foam Gun
  6- Foam Hydrant Box
  7- Wheel type foam extinguisher equipments 8- Foam agent.

## Horizontal Pressure air- foam Proportioner

B- Working principle of  Surface Injection Low Expansion Extinguishing System.

Cautions for Design :

C- Air Foam Gun
Structure Characterestics :

• Water Mist  Fire Fighting System :