Hmm my system is likely different from yours. 75 psi sounds safe to me. What do you think @Killa12345
you can even go up to 125psi id say safely…even 50/50 butane/propane is gonna be right around 75 psi at room temp (80F).
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Any way to use triclamp fittings?
Don’t think so on that tank but boy that is a good idea for a product
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how did you end up retrofitting this tank for nitrogen push? I also use the same style tank and have no gauges or PRVs on it.
I didn’t. I still don’t run nitro. I ended up getting a stainless tank from @Killa12345
You can get a good solvent from @Killa12345 that’s safe to use with a nitro push.
Those tanks are carbon steel and are a bitch.
What makes them a bitch? I just bought my nitrogen tank today and am going to try and push into one of these solvent tanks. Do you run nitro on that stainless steel tank? or just running a pump? I use crc so I figured I’d need the nitro to force it through.
Did you use all stainless to distill your solvent? Did you distill through a molsieve? Do you have a molsieve?
Moisture can rust those tanks.
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Yes all stainless on my system. I haven’t distilled through molesieve but plan to next run and every run after. Ah I see so they can become contaminated. Do you think running 50-100 psi of nitrogen into one of those recovery tanks would be safe? It says they are rated for 400 PSI.
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Ask your question there for a safe answer. 
I’m passive, I don’t run nitro or a crc.
And they are.
But what is the giant ass prv near the handles set for?
What I mean is most tanks like the yellow and gray ones have a prv on them near the handles I think it’s like an indent on the brass thing.
Recovery tanks (HVAC) are rated for 400 PSI. The PRV is built into the valves.
Why on earth would they advertise a max working pressure, but have a secret lower pressure they pop at?
Propane and HVAC tanks, and DOT tanks in general are stupidly safe. The rusting is pretty gross, but beyond that (and the risk that having a rusty pressure vessel incures), they are designed for intrinsic safety (IE, not becoming a pipe bomb bleve)
I suppose you’ve been at this for a little less long. No hate, I spent years reading ICmag before I ponied up for my first box of steel
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Idk I still. Like to ask questions. Don’t wanna homie here to die.
But true idk. But you never know? Right? Like they could say it’s 400 and it could accidentally be 80 and shit happens…
I actually just stopped giving a shit about anything that had to do with those tanks once I got my stainless tank.
Ditto. They’re gross.
They are safe tho. Idiot proof… apart all the issues with rust… and shitty valves… and tiny 1/4" JIC connections
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Would you say that these tanks usually come rusty or that they are just predisposed to rusting since not stainless?
Thats what one calls
planned stupidity
And it just might work.