gas bottle measurement

I have read once that a litre of LPG (compressed as a liquid as in the gas bottles) is approximately 0.5 kg.

So 9 kg would be roughly 18L and at 70cpl = $12.60 if you could fill it with auto LPG which is another story.

Col

Specific gravity of butane/propane approx 0.6 therefore 9 devided by .6 around 15L I would think

Hi Shane
Every 1lt of gas is approx 500grams ,or 1kg of lpg is approx 2ltr, therefore a 9kg bottle contains 18 ltr, try this site
http://www.energyinstitute.com.au/online-with-anne/energy-jargon.aspx
hope this helps
Russell

thanks all. cheers shane.

sheesh you guys do it the hard way!
the water litres should be printed on the bottle pretty sure it is something like W5.5

Don't forget the ullage valve bleed line is set at 80% volume (by law) so you can never fill the bottle above 80%. This is to allow for expansion of the liquid due to a rise in temperature which if filled above 80% would exceed the capacity of the cylinder on a 50 degrees C day which would cause the safety valve to vent to atmosphere the over pressure thus saving a big bang. The cylinder should have its water (liquid) volume stamped on it (by law) and the amount you actually get in it should be 80% of that amount. Years ago they used to weigh them before and after every time they were filled and you paid by weight for the product but the gas companies worked out that they couldn't rip us off if they sold it that way so they changed it. The 45kg cylinders dont even have a gauge on them either.

Shane

I get one of my 9kg bottles topped up, at a local servo, yes there are still some that don't swap'n'go. The bloke there actually tares off the bottle, and fills it to approx 9 kg's. +/- 0.5 kg's.
I'm happy at that.
I pay for the difference.

The other 2 are swap'n'go type ones, and they are always empty.
Replacement ones are 9 kg's.

Cheers
Bucky