Heptafluoropropane(FM200) extinguishing agent profile:
Heptafluoropropane at room temperature is a colorless, odorless, non-conductive,
may be stored in the low-pressure liquefied gas fire extinguishing agent, a density of
about 6 times the air density (the physical properties shown in Table 1) of the formula
CF3CHFCF3, trade name HFC-227ea, foreign called FM-200 (its technical
performance are shown in Table 2), the extinguishing agent suitable for total flooding
fire extinguishing system. When the activity of free radicals generated by the
decomposition extinguishing agent is sprayed to the protection zone, flame or fire
extinguishing agent contact hot surfaces, the radical chain reaction seize combustion
generated active substances, destruction combustion process chain transfer, and
ultimately achieve the purpose of extinguishing the ways a chemical fire, cooled,
diluted or cut off the air and other physical effect is minimal. Because of its high
performance fire, the equipment clean, does not destroy the ozone layer, etc., is the
alternative to Halon fire extinguishing agent of choice for products, now available in
many countries and regions of the world has been widely used. Ministry of Public
Security has also been recommended as an alternative to the use of Halon widely used
in electricity, water conservancy, metallurgy, petrochemical, telecommunications,
industrial and mining enterprises, banking, civil aviation and other industries of
various important places of protection in our country, such as a computer room,
communications room, precision instrument rooms, physics and chemistry
laboratories, generator room, changed appliances, books, libraries, databases, archives,treasury, oil platforms, hydraulic oil tanks of flammable liquids and other combustibleroom and easy to produce electrical fire hazard areas.

Table 1 HFC-227ea Physical Properties:

FM200 The structure and parameters of system :

Extinguishing agent cylinders :

Structure : extinguishing agent group is mainly composed of extinguishing
agents bottle containers, container valves, siphons, safety relief devices, fire
extinguishing agents sampling ports, pressure-type leak detection apparatus and
protective devices and other components mistake jet.
How it works: container is a steel pressure vessel, fire extinguishing agent to the
liquid stored in the container, when the fire broke out, from the drive to control
airflow into the container of gas cylinders inside the cylinder valve drive, the
container valve opens to release extinguishing agent. When an emergency situation,
the pin can be pulled manually (with nameplate signs), manually depressing the
container valve opening pressure cap. But in the combined distribution system should
be open to select the appropriate valve protection zone in order to pressure the manual
pressure cap.
When the container is disconnected from the valve and the system piping, the
guard must be mistaken injection (known as the "protective cap") mounted on the
container valve outlet without installing a protective cap can cause inadvertent
activation of the cylinder when moved vigorously. Violation of this warning may
result in death, personal injury or property damage.

Driving gas cylinders(Model AW-DGC ):

Structure : Drive group consists of nitrogen gas bottles and containers, container
valves, safety relief devices.
How it works: container is a steel pressure vessel, using nitrogen as driving gas;
when the fire broke out, fire alarm controller output DC24V current, open bottles
group container valve, so that the first container of nitrogen released from the
container outlet valve, through the control pipe open the corresponding selector valve;
then driven flow through a control line to set fire extinguishing agent bottle container
valve actuating cylinder valve open container. Case of emergency, you can pull out
the manual button insurance sales, depressing the manual button, you can make
starting valve action.

Selector valve:

Structure : Select valve consists of body, drive cylinder and other components.
How it works: Choose a valve for the combined distribution system, when the
selector valve corresponds to a fire protection district, fire alarm controller output
DC24V current open select the corresponding drive gas bottle valve group. Driving
gas by controlling the trachea, the drive cylinder valve is opened to select, and then by
controlling the trachea, driving gas flow line check valve to start the fire extinguishing
agent cylinders container valve, extinguishing agent through the manifold, valve and
pipe network cast to select Protection zone. When an emergency situation, but also
lever handle, the selection valve is open

 Driving gas check valve:

Structure : one-way valve from the valve body, valve components.
Driver minimum gas flow line check valve opening pressure is: 0.09 MPa.
How it works:one-way valve for combined distribution system, when a fire
protection district, driving gas cylinders open, driving gas flow protection zone
corresponding selector valve cylinder, open the selector valve, the check valve into
the control line. Other protection zone and the control line can be connected to the
dispensing valve which prevents the drive gas into the drive cylinder, in order to avoid
malfunction, to achieve the function assigned to the combination through a one-way
valve.

Extinguishing agent check valve:

Structure : one-way valve consists of the valve body, valve components.
How it works: a one-way valve manifold is connected to, and should be mounted
vertically (Note: The arrow mark up). When the system is working, fire extinguishing
agent fire extinguishing agent cylinders from the manifold into the protection zone to
cast; check valve prevents backflow extinguishing agent storage containers.

Manifold:

Structure : the manifold by the seamless steel pipe, fittings, flanges and safety
relief device component.
Manifold operating pressure safety relief device setting: 7.2MPa ± 0.36MPa.
How it works: When the system works, manifold bottle extinguishing agent used
to bring together a group of fire extinguishing agents, the protection zone cast;
manifold safety relief device is mainly to prevent over-pressure manifold, from a
security role.

 Bracket:

Structure : the major group of bottles from left to stand column, and right
columns, the columns, beams, and the hoop components; cylinders fire extinguishing
agent for fixing the bracket cylinders, manifold placed against the manifold and
cylinders work shaking.

Signal feedback device:

Structure : the shell mainly by the signal feedback means, Connecting seat, micro
switch, rod components.
Signal feedback device operating pressure: 0.2MPa ± 0.02MPa.
How it works: signal feedback device mounted on the manifold outlet Valve at
the outlet at or choice, when cast gas fire extinguishing agent, gas Pressure pushes the
piston signal feedback devices, micro switch is turned on, So that the fire alarm
control panel lights were bright, the display system startup
Note: The signal feedback device operation, you must manually reset. At reset,
the card body positioning pins next to the ring by pulling outward pull click.

Connecting tube:

Structure : the tube is connected to the container valve and the connecting pipe
extinguishing agent flow line between the check valve, from the pressure damping
effect. It is mainly made of stainless steel bellows and outer sleeve system
components.

Control trachea:

Structure : the trachea is mainly controlled by a nut, the pressure sleeve,
gas-controlled components. It is used to transport the control line is released from the
bottle group started out to start gas.