I'm buying a large 2 stage compressor motor that has been bolted onto a small homade pipe tank. I'd say this compressor motor would go on a 125 gallon tank normally.
Could I use a 150 gallon propane tank for this? I know, just find a tank, but I can get this propane tank for free. Would it handle 120 psi?
Am I trying to kill myself?

I think liquid propane is a LOT higher PSI than 150.

propane for vechile are about 300 psi so it will handle air no problem.. its pretty safe..

I'm buying a large 2 stage compressor motor that has been bolted onto a small homade pipe tank. I'd say this compressor motor would go on a 125 gallon tank normally.
Could I use a 150 gallon propane tank for this? I know, just find a tank, but I can get this propane tank for free. Would it handle 120 psi?
Am I trying to kill myself?

IMO, I wouldn't see any harm in using a 150 gallon propane tank for an air comp. tank.

However............ Before, you start fabricating/welding mounting plates, I would pressure test the vessel with a pressure gauge and see if it leaks down overnite. Btw, does the prop tank have a data plate?

Friend of mine use using a 150g one in his shop. Works great with 2 three cylinder pumps going into it.

I know a lot of people that have used freon tanks as holding tanks for small compressors. LPG is much higher pressure than you are using for air, so I don't see any problems as long as the LPG has been purged... :)

as long as the LPG has been purged... :)


running a cut off saw with lpg exhausting out of your tool might get interesting.

running a cut off saw with lpg exhausting out of your tool might get interesting.

Those were sort of the lines I was thinking along! :eek:

ok take off the valve from propane tank.. and then fill it up all way up with water then drain it

no propane in the system then use it with air.. u wont have any problem wtih cutoff or anything mentioned above.. and if u need to weld some bracket or something on it.. u have to fill/drain the water in there for saftey..

i made a few holding tanks by tapping the valve and making an adapter from the valve to a npt fitting. it works great, its way heavyer then a regular 5-10 gal tank.

but i can not get the smell of propane out of the tank. its been empty for a long time (whole valve taken out) and ive emptied it maybe 40 times to try and get the smell out.

maybe wash it with parts cleaner or something.

Add a bung and a peacock (sp?) so you can drain it more easily, 150psi should be no problem

Add a bung and a petcock so you can drain it more easily, 150psi should be no problem

MSC Industrial supply has a multitude of bungs, threaded inserts, and plugs....and I think, petcocks.

try to get the smell out of the tank before you go further. youll end up spending money on something that you wont be able to use because it smells so bad... unless you like that smell

it gives u free high.. no need to go down the street and buy some dope.. just put the blow gun on your nose and u are set :P

I used a 100 # propane tank for a portable air tank and yes it smelled like propane after 100 refills. After a cherry air freshener was added to the tank (2 ounces of liquid), it cured the problem, cherry is easier on the nose than propane.

I agree with other posts it is plenty strong propane is between 200 - 300 PSI depending on temperature.

propane is odor-less, they add that smell for safety.
apparently that smell is similar to boiled cabbage.
fire the cook

Propane can hit pressures up close to a 1,000 psi.You will have no problem's.My buddy has 2 old hot water heaters inline that he uses as air tank's.

UPDATE
I went to pick the thing up and it's a Freakin' 500!!!!! My Compressor would have to run for hours to build up pressure in that damn thing!!
Oh well, the search continues.