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Refilling old 20# propane tanks

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steveinct

05-28-2003 06:03:11




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Hi all, I have been thinking about this for a while now. I have seen a refill kit in Northern Tools catalog to fill small tanks from a 20# tank. How about using my new tank to fill my old style outlawed 20# tanks?? Hook up a couple of fittings and hose and let gravity do the work. The propane is in a liquid state and should fill the old tank if I have the new tank upside down and above it, no?? Any thoughts would be appreciated!! Steve

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Ray,IN

05-28-2003 20:24:10




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 Re: Refilling old 20# propane tanks in reply to steveinct, 05-28-2003 06:03:11  
You can't get liquid LPG out of the new OPD valves. It's made to flow only gas, and at a low flow rate so that if a hose breaks the valve will shut off the gas and prevent an explosive atmosphere. This site has all the info.



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Ben in KY

05-28-2003 07:24:35




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 Re: Refilling old 20# propane tanks in reply to steveinct, 05-28-2003 06:03:11  
It might work but I wouldn't take the risk for a 25.00 tank. I just made an air tank ( 120 PSI )out of my old propane bottle.



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mpj

05-28-2003 08:06:26




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 Re: Re: Refilling old 20# propane tanks in reply to Ben in KY, 05-28-2003 07:24:35  
What did you use for fitings on your tank coversion?



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Ben in KY

05-28-2003 08:40:43




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 Re: Re: Re: Refilling old 20# propane tanks in reply to mpj, 05-28-2003 08:06:26  
I used the fitting off of an old grill. Just unscrewed it from the requlator and threaded on a T with a gauge and female airline fitting.



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jake

05-28-2003 08:28:32




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 Re: Re: Re: Refilling old 20# propane tanks in reply to mpj, 05-28-2003 08:06:26  
Why even bother, a propane dealer charges $10.00 to put a new valve in, in MI the Amish charge $6.00. Wal-Mart will also take a old style and replace with a refillable jug. Don't blow your self up for a sawbuck.



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Ben in KY

05-28-2003 08:42:41




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 Re: Re: Re: Re: Refilling old 20# propane tanks in reply to jake, 05-28-2003 08:28:32  
My local propane dealer (Southern States) wanted 18.00 to put the new OPD valve in ! I just bought a new tank at SAMS for about 23.00.



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T_Bone

05-28-2003 09:12:34




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 Re: Re: Re: Re: Re: Refilling old 20# propane tank in reply to Ben in KY, 05-28-2003 08:42:41  
Hi Steve,

The new OPD valves are a vapor only valve. It don't matter which way you flop it, vapor only.

You can fill by condensing the vapor, ie; tank to be filled in a ice bath that lowers the pressure but still only gives you vapor but more of it. LP boils at minus 40 so you would need below -40 to get a liquid transfer from a vapor only valve.

Welding tanks, fork lift and cylinders more than 40lbs are NOT required to have OPD valves. Getting someone to fill my "welding" cylinders is hard to find but can be done.

T_Bone

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RayP(MI)

05-28-2003 18:28:52




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 Re: Re: Re: Re: Re: Re: Refilling old 20# propane in reply to T_Bone, 05-28-2003 09:12:34  
Just finished reloading a bunch of 16oz tanks from a new 20# OPD equipped tank with that kit fitting. It works! Instructions are to chill the small tank for 15 minutes connect fitting to large tank, connect chilled small tank to fitting. Upend the whole assembly, open valve for a minute or so. Close valve, remove small bottle, it's filled, or partially so. You can also fill 20# tank by putting it on the side, and the smaller bottle upside down, using the same proceedure. The OPD tanks have a dual outlet fitting - one female for the old style regulators, and a larger male thread for the newer style regulators. Wife uses quire a bit of propane from a torch to burn off loose hair from wire rabbit cages - I can't afford to buy it in the small tanks!

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markct

05-28-2003 09:35:57




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 Re: Re: Re: Re: Re: Re: Refilling old 20# propane in reply to T_Bone, 05-28-2003 09:12:34  
so your saying a tank over 40 lbs doesnt need a opd valve, i should get those couple of 100lb tanks we got around filled and just stand it up next to the porch and put the gas grill up on the porch maybe. i wouldnt need to fill them up as often either



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Kevin

05-28-2003 14:39:06




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 Re: Re: Re: Re: Re: Re: Re: Refilling old 20# prop in reply to markct, 05-28-2003 09:35:57  
Thats exactly what my buddy does up north at the cottage. 100# lasts over three years, and can be refilled locally!



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