Because nitrogen gas bigest quantity in air.
51 to 56
Nitrogen can be used in fire extinguishers as gas propellant.
The gas extinguisher that is filled with carbon dioxide and one that is filled with foam can help put out a fire.
There is equipment that connects from the gas tank to the fire extinguisher, and is deigned to keep from overpressurizing the extinguisher. Do NOT try this without the equipment.
N2, you know nitrogen gas
it depends how big the fire is
When it comes to fire extinguishes, the smaller the volume of the extinguisher the more pressure the gas has. So if the size of the fire extinguisher is small, the pressure might be high.
CO2 extinguisher have a max test pressure of 20,700 kPa. Max design operating pressure of 18,570 kPa. The min burst pressure of a cylinder must be at least 2.7 times the max operating pressure. So the burst pressure of a CO2 fire extinguisher will be at least 50,139 kPa
No. The diaphragm on the pressure gauge is leaking, and the gauge will soon be inoperative. Have the extinguisher serviced and repaired.
The gas used in fire extinguishers is carbon dioxide. That is only for a CO2 extinguishers High pressure and no Gauge on the unit(about 2000psi). Normal Dry chemical extinguisher ABC, BC (195psi)Use Nitrogen as the propellent.
In a 5 kg DCP cartridge type extinguisher .the co2 cartridge pressure becomes 7 kg/cm2.
I have read it some where that the inside pressure of Co2 in fire extinguisher is 55 to 58 kg/cm2 at 21 deg C. However the pressure varies as per the ambient temperature.