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Old 01-12-2014, 05:46 PM   #29
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I apologize if it got kind of disjointed.

I was pointing out the 'catch 22' in the other post.

If you're in extreme cold, and there's little if any vapour, the engine or appliance won't start and make heat, the heat needed to vapourize enough propane to keep the cycle going.

The other member seemed to both argue with the point and agree with it, all at the same time.
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Old 01-20-2014, 10:22 AM   #30
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As Kix says, you do transfer liquid propane and you do it by turning the supply tank upside down. The gas pressure in the feeder tank helps push the propane into the other tank and overcome the residual pressure in it.

And chilling the target tank does indeed help a lot with the refill - I've experimented both ways and it indeed makes a BIG difference. I get nearly a full 1 lb when using the chill method and 0.5-0.7 without it. Whether it is due to enhanced gas pressure differential or some other factor, I cannot say, but empirically, it works!

As for filling a 4.5 lb tank, you would need a separate adapter, basically a POL-to-POL hose. The little 1# bottles have a different fitting.
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Old 01-20-2014, 10:32 AM   #31
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The POL to POL post is exactly what I was looking for!!!! Thanks!!
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Old 02-08-2014, 09:11 PM   #32
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Originally Posted by max49 View Post
I was hoping for a better answer also, like maybe a link to where you can buy the hose with adapters to do this.

Hope this is'nt hijacking the thread, but I have a 4.5 or 5 lb bottle also with the old fashion valve that they won't fill any more. I used to work for a company that had their own propane tank and pump and I just filled it myself. I don't work there any more so I can't get it filled. A new 4.5 LB bottle cost about $60 to $70 and a 20LB cost about $25 to $30, go figure.
This is the reason I would like to fill it myself off a 20LB bottle.
However since I'm not having luck at finding the adapters needed, has any one just changed their own tank valve to the new OPD valve?
I hate to spend $60 on a 4.5 lb tank when I already have one and have to refill it 4+ times more often.
If I could find the right adapters, I would'nt mind if I could only get 3 lbs in it, but I've had good results refilling 1lb bottles by putting them in the freezer and the 20lb bottle , much warmer and upside down and seems to fill the 1lb pretty much all the way. I'm not enthused about doing as much as I was after I had at least one of the 1lb bottles start leaking after I refilled it. Maybe it was a bad bottle or just had been refilled one too many times.

I had 2 of the pre-OPD tanks. Instead of buying new tanks, discarding the old ones and then having the new tanks filled; I just took them to Speedway gas station and they did a swap for a full new style tank for about $21.00. After it's empty, fill it anywhere because it has the new OPD valve.
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Old 02-08-2014, 09:20 PM   #33
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Took my old (out of date) tank to Lowe's and exchanged it for a new one for less than than $20. I can now have it refilled anywhere for $12 to $16 depending on the current price.
Wayne & Roberta and Maggie the Miracle Dog 08 Winnebago Destination 39W Gas UFO Workhorse Chassis......Never make a woman mad. They can remember things that havenít even happened yet.
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