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Gas into an LP tank

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Garry

06-24-2003 10:10:12




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How can an LP tank be converted to a gas tank. I have tried to put gas in one and it flows back out. I have tried several of the inlets in the tanks but still havn't got it to work. The tank is empty and the outlet to sedement bowl seems to be open and no gas goes into it. Anyone out there done this before?




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buickanddeere

06-24-2003 19:50:49




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 Re: Gas into an LP tank in reply to Garry, 06-24-2003 10:10:12  
A LP tractor that has excaped a hack conversion to gasoline. Is worth enough to collectors in the north east to purchase the gas or diesel you wanted in the 1st place. I hope this isn't some rare collectable here.



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Paul Janke

06-24-2003 18:09:45




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 Re: Gas into an LP tank in reply to Garry, 06-24-2003 10:10:12  
I would guess the reason it won't take gas is because there is a tube from the inlet to the bottom of the tank with no vent to atmosphere, so the gas flowing in is stopped by an airlock. The cure would be to vent the tank to atmosphere somewhere at the top of the tank.



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here, try this

06-24-2003 16:21:04




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 Re: Gas into an LP tank in reply to Garry, 06-24-2003 10:10:12  
lp tanks are designed so you start tractor on vapor, run on liquid. (thats why there are 2 valves. i think there are drop pipes inside like in a water heater. LP tanks were never designed to drain liqid by gravity out the bottom. If there is a drain plug you might remove that and attach your outlet there. I don't know what you pretend to do about filling.



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John A

06-24-2003 16:12:47




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 Re: Gas into an LP tank in reply to Garry, 06-24-2003 10:10:12  
Garry, You didn't say what kind of tractor and its LP tank you are trying to convert to gasoline. Wouldn't it be simpler to go to your favorite tractor salvage yard. Then get a replacement tank and mounting hardware. Also will probably need a different hood too.
Though I personly would rather have the LP setup instead of a gasoline one.
IMO,
Good Luck,
John A.



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paul

06-24-2003 15:48:04




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 Re: Gas into an LP tank in reply to Garry, 06-24-2003 10:10:12  
I imagine this is one of those questions where you will get replies wondering what you are trying to do, kill yourself & your whole neighborhood???? :)

Fortunately I'm too dumb to know what would happen, so I won't be so harsh, but could you clarify what you are starting with (a 20lb lp tank, or a 1000 gallon lp tank?) and I assume you are trying to put liquid gasoline into it? And you want it to be mounted on a vehicle, or you want a portable gas can, or you want to end up with what? Are you mounting it somewhere, upside down, right side up, added a drain tube, or what?

Ok, and then what have you done so far? LP tanks are air tight & hold a compressed gas, while gasoline tanks are liquid tight & need to be vented to air-pressure to hold a flamible liquid, no pressure build-up allowed! So you did of course change the fittings and add a vent of the right type?

Then after that at minumum it should probably be painted red, and even then it's probably not up to code somewhere. You'd probably have to meet a lot of conditions to make it safe & legal if such things worry you or your insurance co.

Those little tanks do make good air tanks, since that is what they are meant to hold - compressed air. You'd have to go some to make them a liquid tank for holding liquids at air pressure.

But I'm a real dummy on this, I don't know anything. Just trying to see what you are doing, so it is more clear. Hope others can help.

--->Paul

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