Butane or Propane

[witzend]

i dont trust items with truma tickets on them . i find truma is another name for poor quality. hee hee.

Very likely the case I only posted the link for general info so Lambert could see what was needed not to recommend Truma it just happened to be the first I came upon could even be others on ebay.

 

[Channa]

As Alan states, i spent most of my time on statics, however campers caravans part of the exam .....It is an upso valve and frankly no wonder not come across it ...most statics and some caravans have a dual change over system ..this I see raises a couple of issues ...on a dual system you would need two upso pigtails ...in reality you would fit a regulator with one. from a testing point of view pigtails have a finite shelf life regulators don't ! ......

I cannot see the benefit to be honest fitting it to the pig tail as opposed to the regulator incorporating an upso.

In terms of current legislation, it certainly isnt a requirement the emergency control valve extends as far as switching the bottle off ....in the event a pipe ruptures, of copurse they are useful.

The downside if there is one and I guarantee it will rear it head before the end of the year is someone changing a gas bottle forgetting it is there and asking why they have no gas.

channa

 

[Channa]

This is what he said earlier in this thread and he has always appeared to know what he's talking about and if you look at the link I posted its the same thing as yours.
http://www.wildcamping.co.uk/forums/images/smilies/tongue.png
Personally I like these hose's saves turning the gas on an off continually to stay safe

I think you will find my evaluation was 100 percent correct from the description

a pigtail incorporating an upso ......why on earth you would fit it to the pigtail and not buy a regulator with one especially for a dual change over system would defy logic.

Of course there is another disadvantage should the pipe rupture between the regulator and upso on a pigtail it wouldnt stop gas escaping the bottle if it is on the regulator itself the system is 100 percent isolated. If you were unfortunate enough to have an accident and the bottle turned on its side for example and ruptured the pig tail a upso on the regulator would shut gas off at source....this method gas would leak ......now I have seen it rest assured I wont be using it for th ereasons outlined limited value

channa




channa

 

[witzend]

This is what he said earlier in this thread and he has always appeared to know what he's talking about

Until Now

 

[Steve121]

I gave a lengthy and boring explanation re insulation in the van re your comments of butane in vans perhaps you too would care to re read

Channa

You said, "Someone mentioned modern vans being well insulated, that tbh is a red herring and doesn't help at all. Both gases turn from liquid to vapour by drawing heat through the skin of the bottle so insualtion has a negative effect in this respect."

This makes no sense at all to me. The van's insulation helps keep the interior warm, so heat is available to make the gas vapourise. The air around my gas locker will be the same as the rest of the air inside the van. Inside the locker it will be virtually the same; the only way it could be lower is through conduction through the (very well insulated) floor and perhaps a miniscule amount of air entering via the dropout vent. Obviously the locker's internal temperature will drop as the gas vapourises, but that is always going to be the case. My water tank rests on the floor next to my gas locker; it's never shown any tendency to freeze.

If it's say, minus 8° C outside and 16° C inside my van, you must surely realise my butane will vapourise the same as if it was 16° C outside and I had the doors wide open.

So, given that the air inside my van is unlikely to be below 16° C if the stove is going to be used, I can use butane regardless of outside temperature.

Whenever I referred to sub zero temperatures I added that my butane bottle is kept in an internal locker.

I have never suggested that butane will vapourise when it's near freezing.

I have also stated I don't let the temperature drop much inside my van, and if it does start to get cold I use my Eberspacher to raise the internal temperature.