Introduction Carbon dioxide fire suppression system consists of:
One or more bank of cylinders storage containers to supply CO2 extinguishing agent
Flexible discharge bends or hoses connect the cylinders to piping manifold
The manifold in turn distributes the agent into the piping network
Nozzles regulate the flow of CO2 into the protected area Reducing the oxygen content from the normal 21% down to 14% will extinguish most surface fires thus requiring a 34% CO2 concentration level. Depending upon the application a significant amount of cooling is also provided. Rapid expansion of the snow to gas reduces the ambient temperature in the hazardous area which accelerates the extinguishing process and retards reignition.
CO2 is stored as a liquid under pressure, usually 57 bars at 20°C, in high pressure steel containers. The CO2 system is actuated by different modes:
Electric solenoid
Pneumatic
Local manual release (at control head)
Remote manual release
When the system is actuated, the closed valve opens, allowing the container vapour pressure to propel the liquid CO2 via the distribution pipe work to discharge through specially designed nozzles where it readily vapourises resembling a cloud of steam. This clouding is due to moisture in the air becoming frozen as a result of the extremely low temperature of the expanding CO2.

CO2 Control Heads Control heads are a vital part of the system operation, and must respond immediately to initiate system dis-charge. The control heads consist of three types:
1- Manual & Pressure Operated
2- Electrical & Pressure Operated
3- Pressure Operated
The quick opening control heads are manufactured from tough, corrosion-resistant brass, under stringent quality control standards.

Detection & Controls A vital part of any automatic fire suppression system is the means for detection and control. Volcano offers sophisticated detection and control systems (electric or pneumatic) which sense fires in their early development. This results in rapid detection, early suppression and less potential for damage or injury.
Volcano CO2 fire extinguishing panels are based on advanced microprocessor based system. Volcano offers a wide range of control panels to choose from for special hazard applications. This range from simple single zone releasing panels up to the most technologically advanced multizone detection panels.
In addition to control panels the detection system consists of the following components. Detectors can be conventional ionization, photoelectric, thermal or analogue addressable sensors and other types of special hazard detection systems including optical, if necessary.

Flexible Discharge Hose The flexible discharge hose is used to deliver the CO2 gas from the outlet of the cylinder to the discharge manifold. Material: Hose: Rubber, Coupling: Steel S300 Cadmied Dimension: Connection: 21.7x1.814 Diameter Nominal: 10 mm
Pressure Rating: Service Pressure: 240 bar, Test Pressure: 400 bar, Bursting Pressure: 960 bar

Horn Discharge Nozzle Material: Brass / Stainless Steel, Finish: Red Paint

Pilot Flexible Hose The pilot flexible hose is used to interconnect the ports of the pressure actuators. The CO2 gas pressure applied on the pressure actuators open the cylinder valves simultaneously.
Material: Hose: Rubber, Coupling: Steel S300 Cadmied
Dimension: Connection: 1/8"BSP
Pressure Rating: Service Pressure: 240 bar, Test Pressure: 400 bar, Bursting Pressure: 960 bar