Found aluminum scuba tanks good price

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SenseiSmash

SenseiSmash

Member
Sep 13, 2020
203
76
IA, United States
Hey everyone,

I have a Benjamin Bulldog. 357 and a benjamin prod .22, I use a hand pump or my GX2 compressor to fill but I really want a tank to top off for a day at the range. I came across these 2 yanks on Craigslist for $80 for the pair. The original owner was a fireman that passed away.

I know tanks need to be pressure tested in order to be filled and this yellow one has an inspection sticker from 70s. The guys sending me more photos but does this seem like a yeah or neah?

Thanks for any assistance!
Screenshot_20210728-204049_DuckDuckGo.1627519736.jpg

 
That's a nay! Even if brand new, these tanks are rated for a max of 3000psi. A quick search on your Bulldog shows a max fill of 3000psi as well, meaning one tank could maybe fill it to capacity once (if you manage to get someone to fill that tank in the first place). What you need is a compressor, or an SCBA tank that will fill up to 4500psi. 
 
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elvis was still alive when those tanks were current lol ... nah .. get a 4500psi firemans tank and a yong heng, thats about the cheapest your gonna fly .. a 3k psi tank might be useful to tether to, it would be like increasing your guns tank size ~30 fold, but i wouldnt want one as a primary fill tank ...

* the bulldog eats air fast, way faster than your average .22 for example ... still youll get quite a few fills out of a 45 min firemas tank ..
 
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I have an O2 diving tank from WWII (80 years old) that still passes hydro. I now use it for CO2 but the hydro is still proof that just because a tank is old is not necessarily a reason to dispose of it.

There are some very good 4500 psi steel tanks on ebay from an Indian seller. They are salvaged from ships and the two I purchased were like new. I got the 2 for $175 each delivered.
 
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Prolly a nay. If 6351 tanks, will require eddy test and the results are only as good as the level of training and experience of the technician. 6061's tend to fare better. Faber high pressure steels are good if found cheap. Personal bias, but if gotta deal with a SCUBA shop, look for one that has a trimix instructor, as those shops tend to have better trained staff, more technically oriented.
 
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