Carbon fiber bottles directly from the source.

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I found these guys while I was searching for a 500cc bottle https://pcpmall.com/. They have a presence on ebay and aliexpress but if you buy direct, you save on not having to pay ebay seller fee markups and unlike ali, if you buy from them directly, they accept paypal. Seller communication has been surprisingly good and the quickest way I have found to get a reply is to fill out their "contact us" on their site. For 117.25 shipped, I have a bottle and a reg coming. I will update this post when it comes. Can't wait to get it for my scratch pcp build!
 
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I purchased 2 SBCA tanks and fill stations so far. Both with fresh hydro and 5 years of life left(I will fill with compressor longer). Both a 44 and a 66 CF 4500# were in the $170 range each with fill station complete. Just need to read and be a little careful. If one is filling from their own compressor I have seen ruff looking(stained tanks) for $30-$40.
 
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I always kind of figured the DOT/ASTM stuff was there as a certification the tank wouldn't rupture and/or cause injury. Dunno if I'm correct but figured this is why the tanks have to be inspected and tested to pass DOT and why they have an expiration date. Figured it's why a dated pristine SCBA tank has to be tossed out or re-certified as well. I always kind of figured 4500 PSI is 4500 PSI if you're using it for SCUBA, SCBA, paintball, or PCP and if you're filling it or having someone fill it for you.

I'm not trying to be an alarmist or say not to buy these, I'm honestly hoping someone could correct me if I don't understand it correctly because the price difference between the DOT certified tanks and the non-DOT is significant.

Brother-in-law was a certified blaster and ran HPA in some of the drill rigs -- when I mentioned to him the non-DOT stuff he said fill it outside in a cage or a drum of water in case it explodes. *shrug*
 
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Although some Chinese companies claim to have the same specs as DOT certification there is no way to verify this. DOT certification cost them plenty, and they have to be inspected on a regular basis. They also have to continue paying for the certification or it drops & last years certified tanks are no longer certified.

They never say how many are tested to BURST prsssure or how often a single run of tanks are tested. Hard to get direct answers. Tanks expand and contract each time they are used and the "amount" of expansion is part of the hydro, not just that it didn't blow up.

These tanks are usually rated in BAR for 4350psi, but they advertised 4500psi. They may be just fine, but 4500psi in a tank is NO JOKE. Be careful, respectfully
 
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Acecare and Shenyang make most of the bottles in the market place anyways, I have ordered direct and the product is excellent.

As above though you will need to fill yourself.
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I got the tracking info today and they are using UPS so it will be here faster than I expected.
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UPS? Is the order coming in from within the US? I thought the website was china based. How long dud it take for youre order to come in?
 
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Although some Chinese companies claim to have the same specs as DOT certification there is no way to verify this. DOT certification cost them plenty, and they have to be inspected on a regular basis. They also have to continue paying for the certification or it drops & last years certified tanks are no longer certified.

They never say how many are tested to BURST prsssure or how often a single run of tanks are tested. Hard to get direct answers. Tanks expand and contract each time they are used and the "amount" of expansion is part of the hydro, not just that it didn't blow up.

These tanks are usually rated in BAR for 4350psi, but they advertised 4500psi. They may be just fine, but 4500psi in a tank is NO JOKE. Be careful, respectfully
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While there is really no way for the average person to "verify" that a specific manufacturer has the actual "Certification" (Think about how easy it is for Chinese companies to sell scopes with Leupold, Bushnell, etc on them as being "originals") below is a link that the tanks receiving such certification are "supposed" to go thru for "European Standards". It's a 40 page document but I think the testing is about page 13 or so.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=2ahUKEwiH4syoz9ThAhUPPq0KHU37BlMQFjABegQIABAC&url=https%3A%2F%2Fwww.gastec.de%2FDownload%2FEN_12245_2002_02.pdf&usg=AOvVaw2rzCwpRdgvEWXi3-xIYY3s
 
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