I think, as others have stated in other threads on this topic, the 'new/modified' cookers now have a plate to deflect some heat away from the cannister.
Obviously, if people continue to use a pan/plate/pot that is too big for the stove, failing to adhere to the operating instructions/advice, they are flirting with a perhaps deadly potential.
Cheers - John
rockylizard said
04:30 PM Sep 21, 2015
Gday...
In addition to my post above (below??) here is information from ELGAS about the situation regarding the 'lunch box cookers'.
Thanks for the good oil in these new gas cylinders John,
I reckon the next step will be a visit to the green shed, or one of the other shops who are now selling the new cookers and have a close look at this improvement that is now supposed to be in them.
If it's only a bit of metal that is supposed to protect the canister from over heating, I can't see why they have doubled the cost of them though.
K.J.
signwilson said
08:47 PM Sep 21, 2015
The venting lowers the pressure build up and also cools the canister from the bubbling off of the lpg (liquid petroleum gas) to gas this is built into all lpg systems stops explosions.
dzcook said
10:51 PM Sep 21, 2015
so does that mean that the old gas cans don't work on the new stoves
no wonder the where cheap the other week in bunnings
03_Troopy said
09:45 AM Sep 22, 2015
signwilson wrote:
The venting lowers the pressure build up and also cools the canister from the bubbling off of the lpg (liquid petroleum gas) to gas this is built into all lpg systems stops explosions.
The crv valve in the newer cannisters simply allows the can's pressure to vent, rather than explode once it does become overheated. You'll still get a fireball from it, if it does vent and the flame is lit, but it won't explode as the old ones did. You still need to be aware of the overheating problem caused by using too large a pan on the stove though.
euphomate said
03:57 PM Sep 22, 2015
Could somebody please answer a question I have been wondering about. Regardless of the new safety design built into these stoves, are the canisters themselves safe to carry for long periods in the living area of a campervan (in this case a Frontline Toyota Hiace van). Are they likely to leak over time, especially in hot climates, and the vapours cause a danger to life. Does the gas in these disposable canisters have a detectable odour. I ceased carrying disposable Coleman propane canisters years ago after reading dire warnings from Coleman that their (solidly built) gas canisters must never be stored in living spaces. This is impossible to achieve in a small campervan. I,ve been using a metho spirit stove ever since, but a portable gas stove is mighty handy to have on hand, and a lot quicker than metho.
03_Troopy said
04:29 PM Sep 22, 2015
I wonder if they were using a portable butane stove
snapper49 said
04:55 PM Sep 22, 2015
I have bought one of the new stoves from bunnings From my observations the differences are The plate the pot or whatever sits on is now fixed in position (my non approved one wasn't ) The pot now sits slightly higher over the flame There is now a baffle plate between the burner and the gas cylinder (my old one didn't have) There is supposed to be a better shut off system (no way of knowing)
They are $29.90 available from Bunnings I bought mine in Canberra
The older gas cylinders do work in the new stove
I would never carry the gas cylinders in a living area
Storage areas for gas cylinders in enclosed spaces on caravans must be sealed from the living area
Must not have any source of ignition ie electrical switches etc
Could somebody please answer a question I have been wondering about. Regardless of the new safety design built into these stoves, are the canisters themselves safe to carry for long periods in the living area of a campervan (in this case a Frontline Toyota Hiace van). Are they likely to leak over time, especially in hot climates, and the vapours cause a danger to life. Does the gas in these disposable canisters have a detectable odour. I ceased carrying disposable Coleman propane canisters years ago after reading dire warnings from Coleman that their (solidly built) gas canisters must never be stored in living spaces. This is impossible to achieve in a small campervan. I,ve been using a metho spirit stove ever since, but a portable gas stove is mighty handy to have on hand, and a lot quicker than metho.
I wouldn't be storing them for any great length of time because they can deteriorate from vibrating against each other. And metho fumes can be pretty dangerous too.
Just bought one for $34. Apparently they've been upgraded and now don't pose a problem anymore.
It sure would be nice if someone would take a photo of the up-grade, Just to show others what the difference is between the old stove and the new one,
I have emailed different manufactures of these lunch-box cookers and asked them to show me the improvement, so far not one has replied,
makes me wonder if the only improvement is the new safety canister,
Which is supposed to self vent if it becomes over heated, my next question is, what happens to the gas when it self vents, ????
I always thought that gas was explosive, here we are told that the canister is self venting, but still safe to use !!!!
Makes me wonder, who is fooling who ????
K.J.
Gday...
I am only the messenger
however, this may give some indication how the CRV cannister prevents the explosion as caused by the non-CRV cannister.
Obviously, the expelled gas, heated and under excessive pressure, will burn - but not explode.
https://www.youtube.com/watch?v=rVwOrk1vl5Y
I think, as others have stated in other threads on this topic, the 'new/modified' cookers now have a plate to deflect some heat away from the cannister.
Obviously, if people continue to use a pan/plate/pot that is too big for the stove, failing to adhere to the operating instructions/advice, they are flirting with a perhaps deadly potential.
Cheers - John
Gday...
In addition to my post above (below??) here is information from ELGAS about the situation regarding the 'lunch box cookers'.
It is worth reading the whole article -
http://www.elgas.com.au/blog/1419-nsw-bans-portable-butane-stove-cookers-lunchbox-cookers
I have snipped this from the ELGAS site about half way down ...
The video I posted above (below?) [https://www.youtube.com/watch?v=rVwOrk1vl5Y] is also included in the ELGAS site.
Cheers - John
Thanks for the good oil in these new gas cylinders John,
I reckon the next step will be a visit to the green shed, or one of the other shops who are now selling the new cookers and have a close look at this improvement that is now supposed to be in them.
If it's only a bit of metal that is supposed to protect the canister from over heating, I can't see why they have doubled the cost of them though.
K.J.
no wonder the where cheap the other week in bunnings
The crv valve in the newer cannisters simply allows the can's pressure to vent, rather than explode once it does become overheated. You'll still get a fireball from it, if it does vent and the flame is lit, but it won't explode as the old ones did. You still need to be aware of the overheating problem caused by using too large a pan on the stove though.
I wonder if they were using a portable butane stove
I have bought one of the new stoves from bunnings
From my observations the differences are
The plate the pot or whatever sits on is now fixed in position (my non approved one wasn't )
The pot now sits slightly higher over the flame
There is now a baffle plate between the burner and the gas cylinder (my old one didn't have)
There is supposed to be a better shut off system (no way of knowing)
They are $29.90 available from Bunnings I bought mine in Canberra
The older gas cylinders do work in the new stove
I would never carry the gas cylinders in a living area
Storage areas for gas cylinders in enclosed spaces on caravans must be sealed from the living area
Must not have any source of ignition ie electrical switches etc
Must be drained by an opening in the bottom
All regulations if anyone cares to look up
All info given with the best of intent
I wouldn't be storing them for any great length of time because they can deteriorate from vibrating against each other. And metho fumes can be pretty dangerous too.