Please also remember that LPG is DANGEROUS if mis-handled .... This may sound far-fetched but is a true story ....
The father of a friend of mine is "miserly" to say the least, and was not happy at the cost of replacement 6Kg bottles for his 'van compared with the cost of 47Kg bottles (its over twice the price/kg) so he decided to save some money.
He rigged up a system to connect a 47Kg directly to a 6kg and did the following :
1. 6 Kg in a chest freezer for 24 hours (

? :-/ :-/ :-/ )
2. Connect 6 kg to 47 kg
3. Invert 47 kg ( !!!!!!!!!!! :-/ :-/ :-/ :-/ ) leave for 48 hours
The theory being that the LPG would "flow" from the 47 to the 6 .. it seemed to work for him .. he reckoned he could "half fill" a 6 kg bottle this way.
He did this for about 3 months before his garage blew up - luckily no-one was hurt and there was nothing expensive in the garage.
The reason for the "bang" .. dead simple .. he had been using standard low-pressure gas pipe .. the rubber stuff you buy from any camping shop. Through this he had been passing unregulated LIQUID gas, it had slowly but surely destroyed the pipe, until it leaked ..........
He was lucky that the actual amount of gas left in the "system" was quite small .. apparently ... and that kept the damage to a "much lower level than expected" ....
Moral of the story ?? don't mess with LPG ....
Now I don't for one moment think a member of OOF would be that stupid .... but ... :-/ :-/ :-/ :-/
