| Topic: Exploding Gas Stove
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Message posted by Decto03/5/2018 at 10:54pm
Outfit: Kampa Croyde 6 Air Classic Location: Cheshire
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Well I looked at the instructions for my 10 year old green Pyramid F4440 suitcase stove.
This has the interlock to prevent connecting the gas while the pan stand is not flipped correctly and also specifies the over pressure disconnect if the gas cylinder overheats so I assume this must have been standard for a long time.
I've used it over the last decade for casual camping, cooking while I've rebuilt 3 different kitchens, supporting barbecues and most recently to boil water in my shed (for nice tea) and for cooking stinky fish outside. It's usually lit for less than a minute in a very large shed so no ventilation concerns.
It's been faultless in the years I've owned it, however after taking a close look at it today, it will be having a close encounter with a large hammer, then recycled.
A close look at where the gas can fits shows two 'O' ring seals. One around the nozzle of the can which is depressed and one around the 10mm or so housing the can nozzle is in. The larger of these seals has a chunk missing, most likely from age and 10 years of can installation and removal.
This makes it a risk for escaping gas and uncontrolled flame as there is no pressure reduction at the canister outlet.
Interestingly, the instructions say use outside or in a well ventilated area with minimum ventilation of 5M^3 per hour. It also says keep away from flammable items, 20cm from wall and 1 meter from ceiling when operating the device.
Most of the 'use outdoors' instructions are due to the significant risk of carbon monoxide poisoning in a confined space and it's much easier for companies to say 'use outdoors only' than to try and explain where it can be used.
No gas appliance should be able to burn uncontrollably due to predictable failure or foreseeable human error as the risk of clothing ignition is significant even in the great outdoors.
A good prompt from Joshi Bear, if I hadn't read this post a few days ago, I wouldn't have been thinking about it and wouldn't have looked at the seals on my elderly stove today. I've checked them before and they have always been fine. (still no hissing)
If you've had one of these stoves for a while, and used it without incident then it's still worth checking the gas can interface as a lot of butane can escape from these cans very quickly in the wrong circumstance. What can I say... misspent youth and all that