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TOPIC: never buy 1 pound propane bottles again

never buy 1 pound propane bottles again 29 Sep 2012 04:06 #1

  • bradner
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i have been refilling these little suckers for 20 years ,,no problem ...tools small needle nose pliers ,and a few pieces of propane plumbing fictures done...

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never buy 1 pound propane bottles again 29 Sep 2012 04:13 #2

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bradner;723341 wrote: i have been refilling these little suckers for 20 years ,,no problem ...tools small needle nose pliers ,and a few pieces of propane plumbing fictures done...


With a tease like that, you know you have to pony up more info......

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never buy 1 pound propane bottles again 29 Sep 2012 04:15 #3

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sorry took a while to get picture up .....

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never buy 1 pound propane bottles again 29 Sep 2012 04:19 #4

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pull valve until propane blows out .. i always squirt wd40 in valve and bleeder valve enjoy

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never buy 1 pound propane bottles again 29 Sep 2012 04:25 #5

  • Astral Blue
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Or you can get one of these , and save yourself the time and effort of rigging one.

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Ed & Lindsey
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never buy 1 pound propane bottles again 29 Sep 2012 04:42 #6

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sweet did not know that piece was available ,,thanks

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never buy 1 pound propane bottles again 29 Sep 2012 04:47 #7

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You can increase the amount of propane in the bottle by freezing the bottle overnight. In fact, you can fill the frozen bottle, refreeze, then fill again. The overfill safety will let any excess out if it gets too warm afterward but I have not had the problem...

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never buy 1 pound propane bottles again 29 Sep 2012 05:06 #8

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I use the one shown on cabelas site. Works great. I fill one every couple days as I use them for work.

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never buy 1 pound propane bottles again 29 Sep 2012 05:13 #9

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Go Aweigh2452;723350 wrote: You can increase the amount of propane in the bottle by freezing the bottle overnight. In fact, you can fill the frozen bottle, refreeze, then fill again. The overfill safety will let any excess out if it gets too warm afterward but I have not had the problem...


Are there any safety concerns when overfilling, especially when temps increase and the gas expands?

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Ed & Lindsey
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never buy 1 pound propane bottles again 29 Sep 2012 12:04 #10

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Astral Blue;723354 wrote: Are there any safety concerns when overfilling, especially when temps increase and the gas expands?


There is a safety valve on each bottle. As I stated prior, no problems to date.

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never buy 1 pound propane bottles again 29 Sep 2012 12:56 #11

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Astral Blue;723354 wrote: Are there any safety concerns when overfilling, especially when temps increase and the gas expands?


Yes. There are very real concerns. The valve may not open before enough pressure builds to blow the container. It may not close and vent all the propane. Either situation may vent the propane at a time when there are ignition sources present. Think about it. Overfill the tank... then later on you tank the tank out of its cold, dark storage and connect it to the nice warm grill in the sun. 10 minutes later it vents (or blows) while you're cooking your dinner.

Don't rely on those safety valves. Also... on tanks with OPD's (those with triangle shaped valves) the main propane tank will shut off when you turn it upside down. That can be worked around though.

I used to fill these a lot, but finally gave up. Half the time the safety valves leak over time. The bottles get ratty or the hassle of filling just isn't worth it to save the $1 or $2 per bottle. Just be careful and weigh your bottles as you fill them. Vapor pressure can get to over 200psi and you have a handy little bomb there.

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never buy 1 pound propane bottles again 29 Sep 2012 14:08 #12

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Question: Why would we want to mess with the small cylinders (and the potential over-filling risks), when we could permanently plumb for a larger cylinder, and be done with it?

The run time would be drastically increased, and the larger "fill station" cylinder requires periodic re-filling anyway!


Just curious!


.

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never buy 1 pound propane bottles again 29 Sep 2012 14:57 #13

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Go Aweigh2452;723350 wrote: You can increase the amount of propane in the bottle by freezing the bottle overnight. In fact, you can fill the frozen bottle, refreeze, then fill again. The overfill safety will let any excess out if it gets too warm afterward but I have not had the problem...


I used to do that with nitrous bottles for the race bikes....til I did it before a trip to Denver and blew out all the safety seals. Opened the trailer door and got overwhelmed by the smell of rotten eggs, from the additive they put in the nos to keep you from huffing it.
since I don't motor up to denver in the boat, sounds like a great idea for the propane bottles though.

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Toni & Leila
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never buy 1 pound propane bottles again 29 Sep 2012 16:36 #14

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It does say on the bottle that if refilled they are illegal to transport. I believe that would include using them in a boat.

A new bottle for me lasts a week for what I use it for in my work. A refilled bottle lasts about 2 days but I don't freeze them. I refill not necessarily because of savings but more so I'm not buying the things all the time. If I forget unscrewed with a large tank I have some always and when it gets low I have warning. It just doesn't fill as good.

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never buy 1 pound propane bottles again 29 Sep 2012 17:02 #15

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never buy 1 pound propane bottles again 01 Oct 2012 22:50 #16

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I have been refilling these one pounders as long as they are in good, clean condition. No rust. I have weighed them after filling and find that filling with a 20 lb bottle will only give you about 3/4 of a pound of propane. I don't think you can overfill them from a 20 lb bottle. And this is with freezing the small bottles.

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never buy 1 pound propane bottles again 01 Oct 2012 23:16 #17

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TedB_BC;723839 wrote: I have been refilling these one pounders as long as they are in good, clean condition. No rust. I have weighed them after filling and find that filling with a 20 lb bottle will only give you about 3/4 of a pound of propane. I don't think you can overfill them from a 20 lb bottle. And this is with freezing the small bottles.


You certainly can. Fill one until there is liquid coming out of the safety valve... and you have more than a pound in it. If you want to refill them, just be sure you're weighing them empty first and then full. It goes pretty quickly.

Here's an easy how-to:

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never buy 1 pound propane bottles again 27 Oct 2012 09:24 #18

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A friend of mine in Baja refilled them all the time until one blewup and burned the Sh!t out of him.

But I don't think he was very careful about the condition of the tanks he filled. In Baja things rust real fast.

I installed a big bottle under my BBQ but I still use the small ones for the heater. I don't use enough of them to spend the time refilling.

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never buy 1 pound propane bottles again 27 Oct 2012 15:56 #19

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Perhaps this would be appropiate. I think you have a responsibility to other boaters of the risk.

Here is a good link.
http://en.wikipedia.org/wiki/Dangerous_goods



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never buy 1 pound propane bottles again 29 Oct 2012 00:31 #20

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No wonder some boats burn or burst. If you overfill the canister the LPG will later expand and flow through the expansion valve. If the canister happens to be stored inside then you can end with a nice propane/butane/oxygen mixture ready to explode at first spark.
The only way to safely reload them is by weighting the canister when new, writing that weight on it with a Sharpie and when refilling never to exceed that weight. Cooling them before makes things faster but easier to overload and don't forget that the valves are designed for a one time use. Corrosion might alter them. You can play with that for a while without any problem like you can play Russian roulette without harm but for a limited time.

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never buy 1 pound propane bottles again 29 Oct 2012 22:22 #21

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TedB_BC;723839 wrote: I have been refilling these one pounders as long as they are in good, clean condition. No rust. I have weighed them after filling and find that filling with a 20 lb bottle will only give you about 3/4 of a pound of propane. I don't think you can overfill them from a 20 lb bottle. And this is with freezing the small bottles.


This is true because when you fill the small tank with the large one, they equalize at a lower pressure so you don't get a full fill.
I like to skrimp on $$$ myself but not so sure this would be safe on a boat. I wouldn't hesitate to refill the one for the propane torch though.

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never buy 1 pound propane bottles again 30 Oct 2012 00:57 #22

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As long as the two containers are not at the same temperature, thus the same pressure, the LPG will flow from the container at the highest temp. to the one at the lowest one. Even if the transfer is done in a gaseous phase, the LPG will condensate and return to a liquid state in the low temp/pres. container.

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never buy 1 pound propane bottles again 30 Oct 2012 01:52 #23

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It'll also just drip down to the lower bottle. You can over-fill them if you're not careful. Everybody counts on the overpressure valve to feel safe. Imagine if the bottle is upside down or on it's side when it vents. You'll get liquid venting. Easy boom.

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never buy 1 pound propane bottles again 30 Oct 2012 08:15 #24

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Lots of naysayers here, but is there evidence of one of these refilled canisters blowing up a boat?
Or just alot of internet experts theories of why it shouldn't be done?
I would imagine that a company like little buddy heaters, that probably employs real engineers to design their stuff, wouldn't design and sell something that produces an accident waiting to happen.
Seems to be more people here that have had good experiences with them. (or the ones that have had bad experience with them are not here to live and tell?)

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never buy 1 pound propane bottles again 30 Oct 2012 12:45 #25

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green650;731046 wrote: I would imagine that a company like little buddy heaters, that probably employs real engineers to design their stuff, wouldn't design and sell something that produces an accident waiting to happen.


We engineer excellent airplanes at Boeing. They're all accidents waiting to happen.

Nothing particularly dangerous about a refilled bottle, as long as you're leaving ample head space and they stay in good shape. Just don't overfill them.

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