Tig welding tips, questions, equipment, applications, instructions, techniques, tig welding machines, troubleshooting tig welding process
MCMIG85
  • Posts:
  • Joined:
    Mon Nov 01, 2021 10:55 am

I have a 20 cubic foot tank for my MIG welder. It's probably the smallest size of tank you can get at approximately 16" tall. I just got it filled with 75% Argon/25% CO2. I'm wondering what PSI this size of tank should read when full? It's reading 700 PSI after being filled.
nelson
  • Posts:
  • Joined:
    Sun Jul 17, 2016 1:21 pm
  • Location:
    near philly

That sounds low. My 18cf hobby argon is 1400 and I don't like that.
Stone knives and bearskins.....and a NEW EVERLAST 164SI !!!
That's my newly shared work welder.
At home I got a Power Tig 185 DV. Nice, but no plasma cutting... Nice tight arc after a second.
VA-Sawyer
  • Posts:
  • Joined:
    Tue Jul 31, 2018 12:56 am
  • Location:
    Candler, NC

Near the top, or on the neck, look for the letters DOT. The standard, such as 3AA follows, and then the rated pressure in PSI. This applies in the USA, other standards are used in different countries.
No sense dying with unused welding rod, so light 'em up!
MCMIG85
  • Posts:
  • Joined:
    Mon Nov 01, 2021 10:55 am

VA-Sawyer wrote: Thu Mar 24, 2022 11:14 pm Near the top, or on the neck, look for the letters DOT. The standard, such as 3AA follows, and then the rated pressure in PSI. This applies in the USA, other standards are used in different countries.
Mine says DOT-3AA2015. So I'm guessing my tan is rated to 2015 PSI?
User avatar
  • Posts:
  • Joined:
    Wed Jan 22, 2014 12:00 am
  • Location:
    Connecticut

You got ripped off. Should be at least 2000psi, give or take +/- 100 psi for temperature changes
Multimatic 255
Post Reply