Where to order air tank for freightliner flc120 possibly upgrade to aluminum?

i have a 1985 freightliner flc120 with BC4 . I keep,having air tank leaks. I have been having to weld them up due to budget and it being hard to find parts.
I know that a weld is temporary as moistu is causing rust. I have a dryer on the truck. I guess a dryer isnt perfect?

How do I order tanks? My truck have a salvage Vin. We put on a cab so numbers aren't correct. The tank has a brand and numbers on it.
It is:
Ventra
A12-11924-000E (I think E I see last symbol due to scuff).
082 (tiny o) 105

Sae code j-10
150 psi max wp

It is located on passenger side inside frame rail at same spot that exterior frame rail storage box/possible battery box Is located. About where the pogo stick would begin.

I'd like to upgrade to aluminum or stainless if possible unless it's too expensive and not worth it.

Any ideas on where to order and estimated cost? Thanks so much!

 

Thank you for the reply.
You are right and I am worried about the welded tank. I have one that I welded that has lasted two years. The current one is welded just so I can move a machine this week on a backroad.

What did you mean by “clang off”? Did you mean to bypass a tank? I’m curious as you may be giving me a tip that I can use in case of emergency.

I’m worried that buying from a junkyard will set me up for a tank that’s just as rusty as what I have?

I thought I stumbled across a popular site similar to big rig chrome shop or something that made custom air tanks for a good deal but now I can’t seem to find the site when searching.

A custom stainless would be nice but that would cost a fortune.

I have a Mack ch613 with aluminum tanks tucked up above the battery box. It’s a dump truck.

Thanks!

 

Thanks for reply.

I had a cousin who is an ex aircraft/machinist/General Electric nuclear employee weld it for me. He did grind it down on outside to get to the good “meat”. He put plugs in it and pressure checked it with soapy water.
But, no coating on inside. I don’t think he opened it up big enough to get to inside. The leak was on the end bead where weld holds cap end on tank.

I didn’t know parts store had tanks. I knew they have universal tanks I’m sure.... but wouldn’t I need the right fittings?

Mine has a big opening on the cab side (used a 1 inch wrench on fitting/nut) and the rear outlet side has two outlets that are smaller.
I googled and saw the Hoosier tank place. Is that reputable? Thanks for the recommendation.
I’m on a tight budget as I have so many machines and tractors that I spend a fortune constantly.
I’m thinking I’ll end up having a cobbled up mess of lines and adapters If I find a universal tank.

 

I am in north of atlanta georgia. Only rust is if clay sticks to things and hold moisture or salt from some mild road salting in winter in upper elevations.

Yes. My Mack ch613 has some aluminum tanks on the side above battery box. I need to get a picture.