Air Liquide Process Tank — 230 Gallon Vertical ASME Vessel

Is this ASME or DOT rated, and what does that allow me to do with it?

This vessel is ASME certified with National Board number 449. ASME Section VIII certification qualifies it for stationary installation as a process or storage vessel at your facility, but does not permit over-the-road transport of pressurized contents—that requires DOT certification. The 10 PSI rating suggests this is a Section VIII Division 1 atmospheric-type vessel typical for cryogenic liquid storage with minimal head pressure.

What is the MAWP and capacity at service pressure?

The listing states a 10 PSI pressure rating and 230-gallon capacity. For ASME vessels, confirm whether this 10 PSI figure is the MAWP or a working pressure—on low-pressure cryogenic tanks these are often the same, but ask the seller for the nameplate MAWP and design temperature range to verify. Capacity should be consistent at this low pressure, but operating volume will depend on your required ullage for the specific cryogenic fluid.

What is the requalification or inspection status?

The listing does not provide current inspection or requalification status. ASME process vessels typically require jurisdictional inspection at intervals set by your state or local authority—commonly every 3 to 10 years depending on service and pressure—but are not subject to the fixed requalification schedules that apply to DOT cylinders. Request copies of the most recent National Board Form R-1 or jurisdictional inspection report from the seller.

What should I inspect before putting it into service?

Verify the ASME nameplate is intact and legible, showing the National Board number, MAWP, design temperature, and year of manufacture. Inspect all welds, the shell exterior, and internal surfaces if accessible for corrosion, pitting, or cracks—particularly at nozzle attachments and the bottom head if this held cryogenic liquids. Check that pressure relief devices are present, appropriately sized, and within their test interval, and confirm any previous service compatibility with your intended fluid, as embrittlement or contamination can disqualify a vessel for cryogenic reuse.