Product

Low Pressure CO₂ Fire Extinguishing System

1. Introduction

1.1 Features of the Low Pressure CO₂ Fire Extinguishing System

The Low Pressure CO₂ Fire Extinguishing System is designed on the basis of the principle of high pressure CO₂ fire extinguishing system and it has an advantage over the latter. Compared with the high pressure CO₂ fire extinguishing system, the Low Pressure CO₂Fire Extinguishing System has the following advantages:

(1) Because of low temperature storage, the system is of low pressure, big storage volume, high extinguishing efficiency and small occupation space.

(2) Being under low pressure, all its steel bottles, pipe net, valves and nozzles do not need resistance to high pressure. So the low pressure system is more economical than the high pressure one. Especially for large system construction, the low pressure system may save more than 30% of the investment of the high pressure system. The larger the construction, the less the investment.

(3) The low pressure system could not only be pre-timed for automatic ejecting , but also be started or closed manually at any time to control the ejection. This particular property makes it more suitable for where frequent fire danger exists.

The specially designed Low Pressure CO₂ Fire Extinguishing System is characterized by the following properties:

(1)The evaporator of the refrigeration unit in the low pressure system uses demountable design, which makes it easy for maintenance.

(2) Both the master valve and the select valve in the system are patent products invented by our company. They are reliable and convenient for operation.

1.2 Application Scope

The application scope is almost the same with the high pressure system.

The extinguisher can be used for the follows:

(1) The gas fire, but the supply of gas can be cut off before extinguishing.

(2) The fire on electric or electronic devices.

(3) The liquid fire, or the fire of some meltable solids as paraffin or asphalt.

(4) The fire on solid surface, or the fire at deep position within wooden products, cotton fabric, paper, etc.

2. Technical Parameters

Type: ZMT'
Layout: stationary type
Working pressure: 2.07 MPa
Charged capacity: (see table 2)
Environment condition: Temperature -20 ^oC ~ +500 ^oC
                                      Humidity 80% ~ 95%
Main power supply: AC 220 V 50 Hz
Reserve power supply: DC 24 V
Storage temperature of extinguishing agent: -20 ^oC ~ -18 ^oC
Starting mode: electric start DC 12 V ~ 28.8 V
                          pneumatic start: gas force >= 2.07 MPa
                          mechanical-manual start <= 50 N
Start delay: 0 ~ 30 s
Starting gas : CO₂Pressure: 2.07 MPa
Ejecting time of the full-submerging fire extinguisher:
                            for surface fire: <= 60 s
                            for deep fire: <= 420 s.
Ejecting time of local application : 30 s

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