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Gas cannister refilling (36 posts / 4,906 views)
audiguypaul audiguypaul
Posts: 1,534
Post #16 23 Apr 2025 16:43
0
In reply to Post #14
900g is about right, I've had them over a kilo without any issues. They have a pressure releif valve so you shouldn't be able to blow one up.
Baitman Baitman
Posts: 5,233
Post #17 23 Apr 2025 17:00
0
In reply to Post #14
I have found the adaptor to connect my stove too
I have two, but one won't seal, but an additional O ring would sort that if needed.

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Duratec
Posts: 302
Post #18 23 Apr 2025 18:47
0
In reply to Post #17
Does your adapter have any means to regulate pressure, ie a screw or valve built in?

If not... Just be careful running the stove at full bore when on propane. The extra pressure of propane could literally spurt liquid fuel out everywhere, ie all over a hot stove.

Tyto
Posts: 192
Post #19 23 Apr 2025 20:18
0
In reply to Post #1
I'm all for saving a bit of money here and there and don't want to piss on your parade ! However, this sort of practice could easily lead to disaster for anyone not fully aware of the risks. Even with all the info already posted, there will be people on here that don't fully understand what they are doing. I'm not saying that it can't be done, because obviously it can, but maybe this sort of thing shouldn't be advocated on a public forum without some form of legal disclaimer. Do the canisters not actually state - Do Not Refill ?
Baitman Baitman
Posts: 5,233
Post #20 23 Apr 2025 20:46
0
In reply to Post #19
Warning added
Tyto
Posts: 192
Post #21 24 Apr 2025 20:37
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In reply to Post #20
Absolved of all liability 😁
stuart666 stuart666
Posts: 4,779
Post #22 25 Apr 2025 05:41
0
I personally cant see the point of getting the dregs out of a almost empty gas canister. Much easier just to buy a fresh new one for how little they cost.
Duratec
Posts: 302
Post #23 25 Apr 2025 07:51
0
In reply to Post #22
Each to their own... But it honestly only takes a matter of minutes, and allows you to reclaim the 25% of gas in each can that would otherwise be thrown away.
Tyto
Posts: 192
Post #24 25 Apr 2025 15:18
0
In reply to Post #23
Why would anyone even consider disposing of a 25 % full gas cartridge ? You just use it until it's almost empty and then just place the canister in a bowl of hot water or use a USB heater to use the remaining gas. I'm truly flummoxed 🤔
kells kells
Posts: 6,017
Post #25 25 Apr 2025 15:24
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In reply to Post #22
How little they cost...Baller..
Beyonce
Posts: 1,711
Post #26 25 Apr 2025 23:11
0
In reply to Post #24
This is it, just shake/ warm the can, take off any wetsuit and you can empty it.
spittlebug
Posts: 592
Post #28 27 Apr 2025 03:36
0
In reply to Post #9
Hi, Coleman C500 canisters are steel not aluminium.
They rust in the top.
Plus test with a magnet, it sticks anywhere on em.


Bob
Baitman Baitman
Posts: 5,233
Post #29 7 Oct 2025 18:05
0
In reply to Post #1
I have used about half a dozen of the gas cans i refilled and I'm still alive with no issues.
I have just refilled them all. All filled easily, but one wouldn't fill more than halfway, so put it in the freezer for half an hour and then it filled up.

I can understand people being worried about the pressure, but the thin plastic tube that connects the large donor propane tank to the small coleman cans isn't splitting or bulging so thats good enough.
Baitman Baitman
Posts: 5,233
Post #30 16 May 2026 15:41
0
In reply to Post #29
Update; Im still using my refills and still alive with no problems.

I have just refilled 6 of the coleman c500 cans, but had a bit of an issue.
I set everything up and tried to refill but I couldn't get much gas to transfer so thought I'd speed it up and put the empty and part filled cans into the freezer.
I put them all in a carrier bag so I could easily drop into the chest freezer. A cup of tea later and I then went to refill them. I may have left them in too long.

Now the cans are well chilled and the gas flows with no problem. I'd pick them up and give a shake and when they seemed quite full I'd disconnect and weigh them.
Now, a normal full can is 620g, and I checked these new refills and they are 650-700g.
They seem ok so I just left the carrier bags in the kitchen.
Later that evening I heard a pop, and later another.
On investigation I found a few of the concave bases has distorted a bit, and one had really pushed out, but thankfully not blown.

I thought I'd best try and burn off some excess gas to relieve the pressure but it wasn't having any effect. I then found the little gizmo that allows transfer of part filled cans and used that to bleed off pressure.
Holding it with some grips is easy enough, but you need to turn the can on its side while pressing the gizmo into the can to release pressure. It comes out as a massive burst of gas, really stinks, and obviously do outdoors and let the gas blow away on the wind.

I quickly got the can weight down to sub 650 so this was ok.
It shows the need to keep checking the weight to prevent overfilling.

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daneeyre
Posts: 255
Post #31 17 May 2026 00:39
5
Risking your life for a 7 quid can of gas. Unbelievably stupid. Natural selection doing its thing.

Don't be stupid enough to do this.
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