Refilling aerosol cans?

Question

Would it be possible fill an aerosol can up with gasses like oxgen from a larger presurised bottle.

i know that it may be dangerous as propellents in the can may react with the oxgen, but ignoring that.. how would i mechanicly carry this out?

and wat pressure would the can be able to withstand?

i am talking about simply filling the can until its conents is under pressure. it is this presure i am hoping to use to exspell the gas later.

any thoughts and would this be possible?

Answer 1

yes, and it's easy - i've done it. the first way is to pump one up with bicycle pump or car tyre pump but the valve of the can needs to be the right size, or make an attachment to make it fit in the end of the pump. if you want oxygen in there you'll need to have the air intake of the pump in an oxygen filled environment (which is dangerous) or make a tube going into the pump coming from an oxygen tank. with this method you can put any gas in there or even a liquid.

the second (mainly for liquid) is to empty a can and heat it whilst pressing the valve (hot air expands) to let the gas out, then put the valve into a liquid and cool the can (sucking up the liquid) if you then want the liquid to be propelled you can pump up the can with a tyre pump.

you can pump it up as much as you want until you see it bulge or explode in your face, but i'd recommend getting it to the same hardness as a normal full can.

have fun!!  

Answer 2

You can buy aerosol cans that are designed to be filled with a liquid of your choice then pressurise from an air compressor. They have a car tyre type connector so you can fill them from a car tyre compressor. The safe working pressure is printed on them.

Don't try to pressurise a regular can as they wont stand the same pressure. A normal aerosol can uses a gas that liquefies at low pressure.

I guess you may be in the UK but here is an example from a US vendor. http://www.harborfreight.com/cpi/ctaf/di...

Answer 3

Depending on the size of the can.

In my opinion if the contents in the can were to react with the oxygen it would make an immediate reaction.

But if you maybe use complete all the contects of the can making sure its empty the labell on the back may tell you or if you go on the companys site?

Try to keep away from extremely flamable cans