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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily for dust/particulate removal from gas streams
Membrane filters without selective gas molecule separation classify as general intake air filters.
If sold as replacement membrane cartridges
Individual filter elements or cartridges fall under Chapter 84 filter parts.
If when integrated into gas analysis instruments
Gas separation in analytical equipment moves to Chapter 90 measuring instruments.
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Import Tips & Compliance
• Provide membrane permeability specs and N2 purity test results to confirm gas separation capability
• Label as 'industrial gas separation' to distinguish from consumer air purifiers
• Check for pressure vessel certifications (ASME/DOT) for safe customs clearance
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.
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
Pressure swing adsorption system recovers and purifies helium from natural gas streams or mixed gas exhaust by preferentially adsorbing impurities. Falls under HTS 8421.39.0140 as specialized gas separation equipment for rare gas recovery.
CO2 Capture Membrane Separator
Polymeric membrane modules selectively permeate CO2 from flue gas or biogas streams, enabling carbon capture for environmental control. Classified in HTS 8421.39.0140 for gas separation via selective permeation technology.
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.
Biogas Methane Membrane Separation Skid
Integrated skid with multiple membrane stages upgrades biogas by separating methane from CO2, H2S, and water vapor for pipeline-quality RNG. Falls under HTS 8421.39.0140 as gas separation equipment for renewable energy.