VPSA Vacuum Pressure Swing Oxygen Plant
Vacuum pressure swing adsorption plant produces tonnage oxygen from air using zeolite adsorbents, with vacuum regeneration for energy efficiency in steelmaking. HTS 8421.39.0140 applies to this large-scale gas separation apparatus.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primary function is gas drying before separation
Dehydration-focused equipment precedes classification under drying apparatus.
If for skid-mounted complete ASU installations
Entire air separation units as machinery sets under other industrial equipment.
If importing the oxygen product itself
Pure oxygen gas imports classified by chemical composition in Chapter 28.
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Import Tips & Compliance
• Declare plant capacity (NM3/hr) and adsorbent volume for proper statistical reporting
• Include vacuum pump integration details to avoid parts classification
• Obtain pressure vessel inspections for modular skid-mounted units
Related Products under HTS 8421.39.01.40
PSA Oxygen Concentrator Generator
This pressure swing adsorption (PSA) system uses molecular sieves to separate oxygen from ambient air by selectively adsorbing nitrogen, producing high-purity oxygen for medical or industrial use. It falls under HTS 8421.39.0140 as gas separation equipment for purifying and isolating oxygen from air.
Membrane Nitrogen Generator Module
Hollow fiber membrane modules separate nitrogen from air by allowing oxygen and other gases to permeate through semi-permeable membranes under pressure. Classified under HTS 8421.39.0140 for its specialized gas separation function in industrial inert gas supply.
Carbon Molecular Sieve Nitrogen PSA System
This PSA unit employs carbon molecular sieves with precise pore sizes to kinetically separate nitrogen from oxygen in compressed air, yielding high-purity N2 for food packaging and electronics. HTS 8421.39.0140 covers this dedicated gas separation machinery.
Industrial Helium Recovery PSA Unit
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