Author Topic: Made a propane tank muffler today (Read 26024 times)

hotater · « **Reply #15 on:** June 22, 2008, 08:33:09 PM »

Take the valve out, run a water hose until it runs over, dump the water and cut, weld, grind or hammer. Propane is a GAS and once the tank is filled with water there is NO place for a gas to hide. No need to keep the water, it's done it's thing.
Pour a pint of denatured alcholol in and rinse back out to cut the stinky goo.

Tom · « **Reply #16 on:** June 23, 2008, 01:10:22 AM »

I had never used the tank I cut up for the muffler. When I took out the valve and turned it over, water came out! I didn't smell a whiff of propane or "stinky stuff" so I just started cutting and welding, no problem.

On gas tanks I will fill with water, dump out and leave to air for a few days. Then I will run an air purge into the tank while brazing or welding. No big bada boom yet.

Stan · « **Reply #17 on:** June 23, 2008, 03:39:09 AM »

See Tom, I'm just a big fraidy cat

Stan

Tom · « **Reply #18 on:** June 23, 2008, 05:01:32 AM »

Well if you are really a frady cat, just get some inert gas to purge the tank with. Even a hose to the muffler on your lawn mower will do the job (that is if it is not running to rich). I've got to admit that I'm a bit skittish about doing it too.

rcavictim · « **Reply #19 on:** June 23, 2008, 06:19:04 AM »

I figure one cannot be too cautious when welding and flame cutting a used fuel tank. I always work on one filled with water. That has to be as safe as you can get. Never had an accident.

Stan · « **Reply #20 on:** June 23, 2008, 03:30:38 PM »

Well Tom, my wife likes cutting our lawn with a push type manual reel lawn mower. We don't own a gas one and I'm sitting here trying to figure out how to convince her to "attach" a hose to herself and pump an "inert gas" to the propane tank. Despite there being some volatile vapours in her "inert gas" I don't think I would be successful in the "attach a hose" part. As a matter of fact I think I'd rather face a partially filled propane tank than her after trying to get her to try that idea

Stan

Tom · « **Reply #21 on:** June 23, 2008, 04:59:10 PM »

Danger Danger! That gas is not inert.

I'll just run the hose from my air compressor into the tank and turn down the regulator for a low flow. Just keeping a flow of air through the tank will keep any fumes from building up.

rbodell · « **Reply #22 on:** July 12, 2008, 02:44:33 PM »

Quote from: greasy_burger on June 22, 2008, 07:29:48 PM

What do you need to prepare the propane tank for welding(to clean out of fumes etc..)

I filled mine with water.

I don't know if there is any truth to it or not But I have heard thaat the metal cam absorb the propane too that means it can still explode after you empty out the water. Just to be on the safe side I left it full of water rite up to where I was going to be cutting. That way if ti was true, there wouldn't be much of a fire and only a pop. I never had either but that doesn't mean it won't happen. Cutting and welding on propane tanks is something you do at your own risk.

hotater · « **Reply #23 on:** July 12, 2008, 09:03:25 PM »

To consider A-36 steel 'absorbing' a fammable gas makes as much sense as 'global warming' and 'peak oil'!!

....but there are those that wear belt and suspenders and still worry.

I was moving my propane tank muffler from MT-II from Magic Hot Springs yesterday and decided to dump the carbon out of it first. After 4250 hours of operation there wasn't enough carbon black to hide in Rev. Wright's congregation! It must be good fertilizer because the weeds are thick downwind of it, too.

hotater · « **Reply #24 on:** July 12, 2008, 10:17:42 PM »

Many years ago I was known as the 'arms dealer' at a major steel mill because I gave some good customers some VERY good fireworks. One such 'cracker', made from two inches of fax paper tube and commercial 'M-80' chemicals, was thrown into the big gas manifold that supplied gas to the re-heat pits. The manifold was eight feet in diameter with several side tunnels leading to grates and the welding crew was working with giant fans to assure safety at the time..... there was a mass exodus of welders.

And there was retaliation that wrecked a lunchroom door in the Millright's section...and my gate pass was threatened.

Doug · « **Reply #25 on:** July 13, 2008, 01:29:11 AM »

Gee Jack I just fill Pepsi bottles with dry ice and toss them in a refuge station full of sleepers.

Glad you don;t have access to the powder mags where I work lol.

Doug · « **Reply #26 on:** July 13, 2008, 03:12:58 AM »

Stan some place out there in Cyber space the Completely Illeagal Agency is already adding this to our files lol,

One reason I won't cross the boarder in my car is the possibility a residue of the stuff I avoid at work rubbed off my work clothes into my car and some well trained dog or electronic sniffer will go off and my car will be laying in pieces in short order at a boarder station and I will get an unlubed cavity search......

Stan · « **Reply #27 on:** July 13, 2008, 04:02:55 AM »

My son just had a knee replacement operation due to a horrendous skiing accident 10 years ago, and he now has to carry a special card and letter explaining why his leg sets off every alarm in the airport when he goes near the security minimum wage slaves.
Stan

oliver90owner · « **Reply #28 on:** July 13, 2008, 09:30:32 AM »

Stan, fertilizer with 60% N

Tell us more about this fertiliser. Ammonium nitrate only contains about 34% nitrogen.

To burn in milliseconds, it is diluted somewhat with fuel oil. Just you need tonnes of the stuff to do agood job on a long face in a quarry.

Regards, RAB

Stan · « **Reply #29 on:** July 13, 2008, 02:54:45 PM »

The point of my posting was that modern, complex materials weren't used for that purpose except in exceptional situations for very small jobs.

Stan

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