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Go Back   SailNet Community > General Interest > General Discussion (sailing related)
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  #1  
Old 01-05-2007
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Anybody seen these?

I was in the propane-gettin' place today and they had a new product, well, new for this area. Anybody seen these? Composite propane bottles. They don't explode, and you can see the fuel level through the wall of the vessel. Our local marine store wants $183 for a small aluminum bottle, but the small composite (2.5 gallons?) is $69, which the propane guy said was "a little expensive right now." Lighter than the aluminum one too.
http://www.litecylinder.com/index.html
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Old 01-05-2007
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Very cool.
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Old 01-05-2007
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Looks ideal for use a marine environment.

How do they prevent explosion?
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Old 01-05-2007
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Gee -- my boat still has an old aluminum tank without the overfill protection fitting. Buying one of these composite ones probably would be as cheap as finding a place that would retrofit my current tank. (I've already checked locally with no luck. Have to go farther afield to find someone to do it.)
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Old 01-05-2007
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Is this tank legal for boats (USCG, etc.)?
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Old 01-05-2007
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very nice, I wondered when someone would do something like this. Composite tanks have been used for years for ultra high pressure cylinders but for some reason never made it to propane (resin compatibility issues with propane?) Since they CAN'T corrode, they'd be ideal for marine use. Now if only they'd make propane that was lighter than air...
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Old 01-06-2007
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As of now it looks like they're producing 10, 20, and 33lb tanks. Not sure how they keep from exploding, but the video is interesting. Site says to email for more info and sneak peeks at future developments, so it looks like more to come. Dunno about USCG approval, but I'm sure it's in the works.
Score one for fiberglass and resin!
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Old 01-06-2007
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fiber tanks are woven and impregnated with resins. They are commonly made out of carbon or kevlar and are usually for ultra high pressure situations (hydrogen storage is 10,000 psi and thats where this sort of unit shines). I can't recall the specifics right now, but there is something about the woven nature of the bottle that makes it much stronger than metal (for it's given weight of course. A similar 10,000 psi bottle in steel would be impractical for portable storage) I've also seen some made out of fiberglass but they are usually very heavy low pressure units for pool filters and stuff. Fiber bottles are also used by car modders for those niffy gas injection systems and to be cool... I guess...

The really interesting thing about these guys is that they are translucent so maybe they really are fg. Sure is nice to actually see your propane level.
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Old 01-06-2007
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Been around for a couple of years, ramping down in price every year. Nice to see them competitive with "name brand" metal bottles now.
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Old 01-06-2007
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Quote:
Originally Posted by SailorMitch
Gee -- my boat still has an old aluminum tank without the overfill protection fitting. Buying one of these composite ones probably would be as cheap as finding a place that would retrofit my current tank. (I've already checked locally with no luck. Have to go farther afield to find someone to do it.)
Sailormitch, from your avatar, it looks like you're in the Annapolis area. I had the same problem and found a place near Annapolis to retrofit my aluminum tank. It cost about $30. The place is located on the east side of Solomon's Island Rd., south of Annapolis. It's near the shopping plaza where the small West Marine is located, and on the same side of the road. I don't remember the name of the place, but it's something like Annapolis Gas, or Anne Arundel gas. It only took about 30 minutes to do, and they did it while I waited.
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