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How do you Ascertain 85% of CO2 is Released within 2 mins from CO2 Fixed Fire Fighting System?

  • Dip tube inside the CO2 bottles ensures liquid getting discharged from a bottle and expands to gas outside of the bottle.
  • If dip tube is not provided, liquid from the top of the cylinder will be released and the possibility of icing in the pipes, thus rendering bottles useless.
  • Hence if the dip tube is present-assure you'he released 85% of CO2 in 2 mins.
  • The dip tube ensures no CO2 is left in the bottle just to go as waste.
CO2 fixed fire fighting system can be made so that it releases 85% of CO2 in 2 mins or even 95% in 2 mins:
  1. The discharge end nozzle has an orifice
  2. Based on the orifice diameter, which is very important and this is what decides the criteria of rate of discharge of CO2.
  3. Basically, if you increase the orifice of the nozzle even 90% of CO2 can be released in a specific time provided the bottle has a dip tube.


  1. Ultrasonically Check the weight of the bottle to ensure liquid level has dropped below, Ventilation to the CO2 bottle space is important factor ambient temp. should not be more than 55 deg c. Also, ensure there are no leakages or icing on the line.


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