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  1. #1
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    Default DPC or CO2 fire extinguisher, which is better

    Which is the better fire extinguisher to get for in a vehicle, and why?
    DPC or CO2 ?

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    Default Re: DPC or CO2 fire extinguisher, which is better

    DCP is better.
    Make sure the powder is rated for Classes ABC (A = Ordinary Combustibles; B = Flammable & Combustible Liquids; C = Energized Electrical equipment) and not just for BC.

    A lot of your car is Class A materials and of course the fuel is Class B.
    The cleanup after you use it is a PITA.

    CO2 is good for energized electrical fires and is also rated for Class B fires, but is easily affected by wind, so for a car it is not very effective.
    No cleanup needed after use though.
    Carl

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  4. #3
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Thank your Greenie.
    Would a CO2 be a good option for home use where a gas stove is involved or an electrical fire?

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    Default Re: DPC or CO2 fire extinguisher, which is better

    Powder.
    The other day I used a CO2 one and the thing shocked the living daylights out of me!!!
    Something about the exothermic reaction and static electricity on the plastic pipe...


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  7. #5
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    Default Re: DPC or CO2 fire extinguisher, which is better

    dry powder, but stick to the annual servicing. Over time with the vibrations in a car the powder will compact so even if the pressure gauge shows a full charge the unit will be useless when needed.

    As said the powder makes a mess and is caustic so needs to be cleaned ASAP.
    Anton Muller

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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by WayneMan View Post
    Thank your Greenie.
    Would a CO2 be a good option for home use where a gas stove is involved or an electrical fire?
    Yes, it will be a good option and will save you lots of cleanup when activated inside your house.

    As Wetkit posted, a CO2 has a handle to hold onto while discharging. If you hold the "Horn" part, the static generated by the gas flow will lead to a nasty shock.

    CO2 extinguishers are unfortunately very expensive and very heavy (SWAMBO might battle to handle a 9kg), but they need less attention than DCP. They are usually only weighed to see if they are still full.

    As mullerza said, you need to have it serviced annually. A good idea is to invert it a few times once a month. You will "feel" the powder falling to the bottom, then you will know it is still "loose".
    Carl

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  10. #7
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Very useful information thank you.
    I have been quoted R356 for a 2.5kg DPC incl VAT.
    Seems like a fair price.

  11. #8
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by WayneMan View Post
    Very useful information thank you.
    I have been quoted R356 for a 2.5kg DPC incl VAT.
    Seems like a fair price.
    At that price, forget servicing the unit, just buy a new one annually and move the old one to the garage
    Anton Muller

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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by mullerza View Post
    At that price, forget servicing the unit, just buy a new one annually and move the old one to the garage
    Or, use the old one and train the rest of the house-hold members on how to use a fire-extinguisher, should the need arise.

    (no point in blasting the flames when the root of the fire is still raging about)
    '01 HB DC 3.2D 4X4 (SE)

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  14. #10
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    Default Re: DPC or CO2 fire extinguisher, which is better

    All our substations have powder fire extinguishers. When putting out a house oil fire in a pan, pls don't go close and extinguish the flame, you will blast the oil and flames all over the kitchen. Stand back and give a few squirts.

    IMHO the powder is an all round fire extinguisher to have. CO2 is great for cooling down beers/cold drinks
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  16. #11
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by N0ddy View Post
    Or, use the old one and train the rest of the house-hold members on how to use a fire-extinguisher, should the need arise.

    (no point in blasting the flames when the root of the fire is still raging about)
    Or just have a bit of fun at a New years party
    Jakes Louw
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    Default Re: DPC or CO2 fire extinguisher, which is better

    At work I have the 2 next to each other, I use the C02 first, if it is not enough use the DPC. In the car I have only the DPC, would do the same but needs too much space. Service yearly though.

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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by mullerza View Post
    At that price, forget servicing the unit, just buy a new one annually and move the old one to the garage

    Service cost is less than R100, I think last year they came came out to the farm and serviced over 70 mostly 13Kg ones athere at around R60 per unit all included. They sift the powder and reuse it after servicing the valve , if you empty it before servicing the cost goes up a lot.

    Another thing, a 5kg C02 (2 on the left) takes more space than a 9 kg DPC
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  19. #14
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by Bex View Post
    At work I have the 2 next to each other, I use the C02 first, if it is not enough use the DPC. In the car I have only the DPC, would do the same but needs too much space. Service yearly though.
    and my words of advice is that Bigger Is Better.......

    I've seen a small dry powder version do absolutely ZIP to a engine bay fire.
    Jakes Louw
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  21. #15
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by hunter26 View Post
    CO2 is great for cooling down beers/cold drinks
    And run-away diesel engines!
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  22. #16
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by jelo View Post
    Or just have a bit of fun at a New years party

    Been there, done that, spent the next day and a half cleaning, the room had exposed brick walls, so plenty nooks and crannies and it wasn't even a new year party, just a big party.
    "The man who does not read has no advantage over the man who cannot read" - Not Mark Twain

  23. #17
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by jelo View Post
    and my words of advice is that Bigger Is Better.......

    I've seen a small dry powder version do absolutely ZIP to a engine bay fire.
    Yep, emptied a 1kg DCP on an engine fire - had no effect whatsoever, and yes, I know how to use one.

    Quote Originally Posted by bigboy529 View Post
    Been there, done that, spent the next day and a half cleaning, the room had exposed brick walls, so plenty nooks and crannies and it wasn't even a new year party, just a big party.
    Try not to breathe in or swallow any of the powder, you'll regret it. Got that T-shirt. It's a very effective laxative.
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  24. #18
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Go to builders and see the prices there. Can look at other shops also. Specialist companies can be expensive. We have at least 7 of different sizes.

    If somebody has a gas stove then the first thing to buy is fire blanket - the bigger size. Learn how to use it and keep it hanging on the wall. The one in the kitchen is 1.2 x 1.8 m. The very small ones are too small. Both of us have been trained to use it. We have electric stove. Blanket is best for oil fire.

    When having those services done they must test the pressure gauge and open the bottle.


    Quote Originally Posted by WayneMan View Post
    Very useful information thank you.
    I have been quoted R356 for a 2.5kg DPC incl VAT.
    Seems like a fair price.
    Jouko
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    Never drive a normal car 8)

  25. #19
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Thank you. Nice learnings today.

  26. #20
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    Default Re: DPC or CO2 fire extinguisher, which is better

    Quote Originally Posted by Bex View Post
    Service cost is less than R100, I think last year they came came out to the farm and serviced over 70 mostly 13Kg ones athere at around R60 per unit all included. They sift the powder and reuse it after servicing the valve , if you empty it before servicing the cost goes up a lot.
    The municipal fire services will service yours or do a swop. They do powder and CO2. We get all our CO2 refilled in Brits but I used to use Midrand Fire Services.
    Jakes Louw
    2012 Jeep Sahara Unlimited 3.6 V6
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