CPI 11'-6" x 16" ASME Packaged Vessel — 10.6 cu ft, 4500 PSIG

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

This vessel is ASME rated with National Board certification. ASME vessels are designed for stationary installation at facilities and cannot be transported over public roads when charged, unlike DOT cylinders which are built to transportation standards. The ASME code stamp qualifies it for most industrial gas storage applications where the vessel remains in place.

What is the MAWP and capacity at service pressure?

The maximum allowable working pressure is 4500 PSIG with a capacity of 10.6 cubic feet. The listing states that calculated fill weights for multiple cryogenic gases are included with the unit, which will show usable product capacity for specific gases at operating pressure and temperature.

What is the requalification or inspection status?

The vessel is listed as new with current ASME National Board certification. ASME vessels typically require periodic in-service inspection per the National Board Inspection Code or jurisdictional requirements, but do not follow the same hydrostatic retest intervals as DOT cylinders. Confirm with the seller what documentation accompanies the vessel and verify local inspection authority requirements for your installation.

What should I inspect before putting it into service?

Verify the nameplate data matches the National Board documentation and that all pressure relief devices are within their service dates and set to the correct pressures. Inspect all valve connections, piping penetrations, and support saddles for shipping damage, and confirm the inner vessel supports have not shifted if this is a vacuum-insulated unit. Request the manufacturer's operating manual to verify proper purging, cooldown, and fill procedures for your intended cryogenic service.