Duff gas (1 Viewer)

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Jun 20, 2022
664
1,482
Chapel St Leonards, UK
Funster No
89,380
MH
Fiat ducato pvc self
Exp
Since 2017
Is it possible to get a duff bottle. Not on camper but heater we have at home. Don't use it much since installing underfloor heating but mil coming for Christmas so used up bottle to change for new one. Heater worked fine for three nights till bottle empty. Fetched a new one (spare) on Wednesday and replaced empty one on Friday. Neither of them will burn pilot struggles to light but does eventually. But burner won't light. Is it possibly a duff batch or is the heater f****d? Anyone had anything similar?
 
Jun 12, 2017
1,468
3,717
Telford
Funster No
49,010
MH
A class Pilote
Exp
2017
I’ve never had a problem but read a lot on here where the regulator gives up, probably around €10 or less to replace. I’ve never heard of a duff bottle
 
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Dec 12, 2010
5,493
22,260
Cumbria
Funster No
14,651
MH
C Class
Exp
since 2011
Might be worth trying a new regulator ? If you're sure there's gas in the bottle, try keeping it somewhere warm for a while, a butane bottle straight out of a freezing garage or shed might struggle to gas off ?
Screenshot_2022-12-03-16-00-56.png
 
Feb 18, 2017
4,342
8,374
Greenwich, London, UK
Funster No
47,382
MH
Hymer MLT 570
Exp
1986
Butane (blue bottles) is pretty difficult to light below about 6c.
Get the bottle to room temperature and try again.

Hence the reason why cooking stoves for winter climbers are powered by propane (red bottles)

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OP
OP
Boldly
Jun 20, 2022
664
1,482
Chapel St Leonards, UK
Funster No
89,380
MH
Fiat ducato pvc self
Exp
Since 2017
It's flogas so yellow bottle butane. One has been in the house since Wednesday the other since yesterday afternoon. Have fitted a new regulator. No change sadly.
 
May 7, 2016
7,467
12,235
West Sussex
Funster No
42,951
MH
Malibu Van 640 LE K
Exp
Since 2003
It's flogas so yellow bottle butane. One has been in the house since Wednesday the other since yesterday afternoon. Have fitted a new regulator. No change sadly.
How cold is the bottle? Butane gets very sluggish below 5C and as the vapour boils off from the liquid it also cools the remaining liquid even further. Hopefully the heater has a safety device that senses the loss of pressure and shuts it down before it gets dangerous.
 
Sep 17, 2017
5,775
10,834
Birmingham, UK
Funster No
50,575
MH
A-Class
Exp
2017
Is it a clip-on adaptor? My previous van came with a butane cylinder and a clip-on. It was fine, but when the cylinder ran out, I switched it and started suffering poor flow. It took me ages to figure it out. The cylinder and the adaptor were both quite worn. If I pushed down on the adaptor, I got full flow. I'm guessing the previous cylinder wasn't as old and it was fully opening the valve? I switched to propane...
 
OP
OP
Boldly
Jun 20, 2022
664
1,482
Chapel St Leonards, UK
Funster No
89,380
MH
Fiat ducato pvc self
Exp
Since 2017
Seems just because bottle was left to completely empty the system had become contaminated with air or something. Kept trying to run it and eventually (about two hours) seemed to bleed through and is now working properly. Waste of a tenner for new regulator but at least mil will be warm now :ROFLMAO:
 
May 7, 2016
7,467
12,235
West Sussex
Funster No
42,951
MH
Malibu Van 640 LE K
Exp
Since 2003
Any contamination in the liquid gas should get left behind when the vapour boils off. Vapour doesn’t carry particulates. However if a full bottle gets tilted I guess some liquid might get into the system. I would want a CO alarm in the room with the heater.

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TerryL

LIFE MEMBER
Mar 5, 2010
6,249
8,303
North East
Funster No
10,511
MH
Low Profile
Exp
2009
I had exactly the same with our mobile gas heater when it ran out of gas. At first I thought that rolling the new bottle rather than carrying it upright may have allowed liquid gas into the pipes but realised that the pilot was in fact trying to light but the gas was coming out too quickly for it - it even blew out a taper I used to try to light it.
Round to our local caravan supplier, £10 for a new regulator and everything was fine. Had to search through my toolbox for a new hose clip as the old regulator (about 40 years old!) wouldn't let go and had to cut it off!
Incidentally it had been working just fine, right up until it ran out of gas.
 

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