transporting LPG bottles

It's probably not the technical answer you are seeking, but I have done it ... store the gas bottle in a milk crate (perfect fit for a large bottle), laid it on the side and used chain to secure it to the roof rack. Never had a drama. My rack has a torneau (spelling???) cover that I like to use for dust reasons, and the bottle won't fit under it standing up.
I was advised to use chain to earth it, but it made sense anyway as I did not want the bottle to get ahead of me if I stopped quickly.
JackAustralia - If you don't love it, leave!!!

No drama about being on its side ... but maybe some about being on a roof rack. just be very sure that it's firmly secured and that you don't drive under anything low enough to hit it! They can be legally carried inside if under a certain size (maybe less than 3kg??? - perhaps someone else will know the legalities) I carry 2kg inside - low, secured and covered. Cheers

Brian , I was once told that it's ilegal to carry gas bottles on a roof rack , I am still usure of the truth in what he said , I never bothered to check. In any storage situation , amake sure the bottol is secure and nothing can rub against the valve

Brian , I was once told that it's ilegal to carry gas bottles on a roof rack , I am still usure of the truth in what he said , I never bothered to check. In any storage situation , make sure the bottle is secure and nothing can rub against the valve

I don't know the technical reasons either but I have always been led to believe that transporting on their side is a problem. Something to do with the fact that LPG is a liquid and the effect that the liquid has on the rubber seals. Your local LPG dealer will have the right answers.Al Symers

Thanks to everyone for their suggestions and advice. Lots of good comments. I shall check with the local gas distributor tomorrow, and let you know what I find out.

I too have heard that LPG bottles should not be stored on their side

Whats the problem standing it up? Not going to use any more room than laying down....?

Problems with side storage have to be an urban myth. A gas container made with seals that were affected by LPG - give me a break!!!!!

You can store a gas bottle on its side...No problems at all!! The seals are designed for lpg....this means vapour and liquid
I think some above are confusing storing versus use....
The Gas Bottle must stand up when in use.
Wow! am I cute
If yer ain't fishing, Yer ain't livin
Richard

Hi Brian.
LPG bottles that are fitted with an insitue valve, ie( 9kg caravan bottle) should be never transported on their side. They have a pressure relief valve, and should the pressure rise too much because of high temp ect,(in the inside of a car in summer) the relief valve lets off excess vapour pressure. If the bottle was laying on its side and the relief valve went off, depending on how full or the angle of the bottle, liquid would be released instead of vapour. 1 litre of liquid = 270 litres of vapour. If your naked skin came in contact with this liquid you will recieve a very nasty freezer type burn about -30 degrees. Bottles of 2kgs or less may be transported inside a vehicle.(may vary from state to state).
Cheers Geoff.

Inside you vehicle its the silent killer (it'll send you to sleep). Particulary if the valve leaks more so if the bottle is on its side.