We Buy Used Fire Extinguishers -

Is it still pressurized? If the needle is in the red, it’s a "rechargeable" candidate.

Heavy-duty shop or industrial extinguishers. we buy used fire extinguishers

Proper handling prevents chemicals from leaking into landfills. Is it still pressurized

Dented or heavily rusted tanks usually can’t be resold for safety reasons. we buy used fire extinguishers

Units containing Halon or Halotron (often used for electronics) are valuable because the gas itself is expensive.